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Take a look inside your opponent book.

Follow the journal from an opponent profile to a match, a training session and an export. Paid features are identified beside their examples.

Screens show fictional demo records.

Screen by screen
The Today screen in OpponentBook: a countdown to the next competition and tasks for checking notes about the opponents you know.
An opponent profile in OpponentBook: head-to-head record, style tags, and the note to reread next time.

The signature feature

Where does your opponent score on you?

Tap where it happened on your sport's diagram, and that is a pin. Then add whatever helps: your action, your opponent's action, a short note and, if the match has a video, the second it happened. Skip any of it and fill it in later, or never. Premium heatmaps collect pins from your recorded matches. Some sports also let you record a named position separately from a location on the diagram.

  • One tap is enough; everything else on a pin is optional
  • Four pin kinds — worked, didn't work, danger, tendency — and room for your action and your opponent's on the same pin
  • Link a pin to the exact second in an attached video file, and reopen it at that moment later
  • A drawing for all 17 sports, with separate position lists where relevant
  • Opponent and aggregate heatmaps with Premium; tendency pins appear only on the opponent heatmap
The annotation screen: a fencing piste schematic with pins grouped by kind, each with a short note.
The Pin note sheet on the annotation screen: the opponent’s action selected above the video attached to the match, paused at the linked moment, with the controls for linking, unlinking and saving below it.
An opponent's annotation heatmap: piste zones shaded by where actions worked, failed or turned dangerous, with an action-success list below.

Screen by screen

What keeping the book actually looks like.

The same journal on phone, tablet and laptop. Log as much or as little as you want — a name is enough for an opponent, the score for a match and a tap for a pin. Everything here is on the Free tier unless a paid tier is marked.

01

A living profile for everyone you face

Keep your head-to-head record, handedness, grip and style tags alongside your own observations. Use the Next time note for a reminder you can find just before facing that opponent again.

  • Search and filter the whole book by name, club or style tag
  • Keep observations together with the matches and notes they refer to
  • The Next time note is easy to find before you compete
  • Add your own style tags and profile options, and hide the built-in ones you never use
The opponents list: profiles with club, head-to-head record and style tags, filterable by tag.
02

Log a match in three lines

Start with the score, then note what worked, what didn't and what to try next time — or save the score alone and add the rest later. Keep it brief while you can still describe the action. The opponent's profile brings those matches and reflections together for later reading.

  • Sport-aware scoring — by period, sets or rounds, sudden death and golden score included
  • Keep pins and reflections with the match, and find them from the opponent’s page
  • Attach photos and video as you log the match, within your device and storage capacity
A match detail screen: the result and score, pinned moments on the piste, and the three reflection fields — what worked, what didn't, next time.
03

Preparation and results, event by event

Create an event and add the opponents you expect to face. See which profiles you have opened, log matches on the day and revisit the results afterwards.

  • Review states per expected opponent — read and unread at a glance
  • Log training camps as events too
  • Find the day's matches under the event, even later in the season
The events list: the next competition with its date, venue and how many known opponents are entered, then past events including a training camp.
04

Training lives next to the book

Record each session's category, duration, effort and notes. The free training journal sits alongside your opponent book, making it easier to bring specific training questions to your coach. On Pro, the evolution analysis can read it beside your match record when you ask.

  • A short entry can include the category, minutes, a few notes and an effort score, for the whole session or for each block
  • Save a session you repeat as a routine, and start the next entry from it with one tap — change only what was different that day
  • Record a whole week or month as one entry if you don't log every session
  • Tags tie sessions to what you're preparing for — an opponent, a competition
  • Add your own training categories, and hide the ones you don’t use
The free training journal: logged sessions grouped by week, with categories, duration, effort scores, tags and notes.
The training log form: a Start from a routine row of chips above Log as, the date and the first training block.
05Premium

A coach's plan, compared honestly

Premium adds weekly training plans and a comparison with the sessions you logged. Share a plan as a file that someone else can import as their own copy. Export dated sessions to a calendar when you want them in your schedule.

  • Compare the sessions you planned with those you recorded
  • Share the plan as a file — a coach writes one, the whole squad imports it
  • Calendar exports (.ics) are snapshots; export again after changing the plan
A Premium training plan: a weekly schedule and a comparison of planned and logged sessions.
A training plan's actions: edit, share the plan as a file, and add the schedule to your calendar as .ics.
06Premium

Fitness tests, with your best beside your latest

Premium adds a Physical tests tab next to the journal and the plan. Record the fitness tests you already do, from a ready-made template or one you build, and the app shows your personal best and your last result side by side. Open a test to see every recorded result on a chart.

  • Start from the Fencing self-tests or Gym assessment template, or name your own tests, their units and which attempt counts
  • Personal best, last result and, once you set your season's dates, a season best; a test you skip stays a gap on the chart
  • Share a template with your coach as a file, and export results to PDF, Word, Excel or CSV
  • Results already recorded stay readable and exportable on Free; they are never sent to AI
The Physical tests tab: under Your results, a card per test with its Personal best and Last result, both dated.
One test's page: Personal best and Last result with their dates, a Season best row, and a Result chart with a dot for every recorded result.
07Premium

Analytics about you, for you

With Premium, compare your recorded results by opponent style, follow your win rate over months, quarters or years, see success rates for your actions and for your opponents' actions, and open spatial heatmaps. These summaries use your own entries; they do not diagnose the causes of a result.

  • Compare your recorded results across opponent style tags
  • Your actions and your opponents' actions in separate lists, each split by opponent style — what works against whom, and what gets past you
  • Set your logged training beside your win rate period by period, and each physical test beside the training before it and the matches after it — read them as associations, never causes
  • Choose where every statistic starts, so junior seasons stay out of the numbers, and export your statistics as a PDF for your trainer
  • Fold away the sections you don't need; the choice follows you to your other devices
  • Every number is computed from your journal, on your device
  • Insights at Premium: the aggregate spatial heatmap across all logged matches, with zone legend.
  • Insights at Premium: results by opponent style tag and a monthly win-rate trend chart.
  • Action success at Premium: success rate per action, compared against one opponent style to show what works against whom.
  • Sudden-death statistics: win rate across all sudden-death bouts, split by who held priority.
  • Training analytics at Premium: the last 30 days broken down by category, with weekly volume.
  • Training against results at Premium: bars for minutes trained and a win-rate line per period, a dashed outline for planned sessions, and a scatter of the same periods.
  • Physical tests and training at Premium: a test picker and training-category chips above a timeline of test results over the training logged between them.
08

Take the book to your coach

Your notes do more when your coach can read them too. Export an opponent's profile, a period of training or the whole journal to PDF or Word on every plan, Free included. The files are formatted for the records you choose, from a scouting brief to a training report.

  • Pick the scope — one opponent, many, training by date range, or everything
  • On Premium, the training report includes the plan-vs-journal comparison
  • On Premium, export your Insights statistics as a PDF — the same numbers the screen shows, each with its sample and a note on how to read it, and no AI
  • PDF for reading, Word for coaches who annotate
The export screen: choose opponents, a training selection or everything, then generate a PDF or Word file.
The export screen with Performance insights selected as the scope, and the Sections checklist beneath it.

iPhone, Android, web

One journal, on every screen.

Use the same journal in the iOS and Android apps and on the web by connecting the same storage account. Google Drive and Dropbox work everywhere; iCloud is available on iPhone and iPad, and on the web unless Advanced Data Protection is turned on for your Apple Account. Sign-in and payment options also differ between platforms. Log a match on your phone and reread it on a larger screen.

  • Log on your phone between matches; type up the longer notes at a keyboard
  • Journal sync uses your own connected storage
  • Read downloaded records and write notes offline; reconnect for sync and AI
Download on the App StoreGet it on Google Play

OpponentBook is now available on the App Store for iPhone and iPad.

app.opponentbook.com
The Today dashboard open in the browser on a laptop: the next competition with a countdown, prep tasks per known opponent, and the week's training.

Your storage, your records

We do not keep a server copy of your journal.

Your journal stays on your device and connected storage. OpponentBook keeps account, subscription and usage information, plus a minimal index and settings. Requested AI actions send the relevant content for processing; this is separate from journal storage.

Journal content in your storage

  • Your observations about opponents
  • Match reflections and scores
  • Training entries, routines and physical test results
  • Photos, video
  • Whether you reviewed before a match

Service information we handle

  • Your email and login method
  • Your subscription tier
  • An index and settings, including IDs, dates and sport tags

Optional end-to-end encryption also protects journal records from your storage provider. Photos and video are outside this encryption.

How your data is handled →

When you want more than memory

AI that reads your book — only when you ask.

Request an opponent summary, competition brief or analysis of your notes. The content needed for that action passes through OpponentBook to an external AI provider. AI does not review your journal in the background.

Premium

One-tap opponent summaries

Bring the notes about one opponent into a short summary to check before you compete.

Pro

Pre-competition briefs

Create a competition brief from your notes about the opponents you expect to face.

Pro

Patterns across your book

Explore AI suggestions about opponent styles, recurring problems and changes in your game. Tick a box and the evolution analysis also reads your training journal: it quotes your own notes, sets your training beside your results against each opponent style, and offers one thing to try. It states a gap, never a cause.

Examples of saved analyses.

Illustrative results using fictional journal entries. Check an AI suggestion against your records before using it.

A saved AI competition brief on an event: one tactical line per expected opponent, a shared theme, and a reminder before you compete.
Competition briefPro
A saved AI matchup-pattern analysis for one opponent: a summary, then a success pattern citing the journal entry it comes from and the tactical adjustment it suggests.
Matchup patternsPro
A saved AI playing-style classification: named groups of opponents who play alike, each with how that style plays, your W–L record and win rate against the group, the opponents in it, and a tactical adjustment.
Playing-style classificationPro
A saved AI match review: suggested turning points, a comparison with earlier bouts and proposed adjustments.
Match reviewPro
A saved AI evolution analysis: a summary, then a pattern marked improving, with the journal evidence behind it and a concrete next step.
Season evolutionPro
A saved AI training-theme summary: recurring themes across recent sessions, each quoting the journal entry it comes from.
Training themesPro
Compare all tiers →

AI results you save stay in your storage, even if you cancel a paid plan.