Comparison

Kata Calc vs Kumite Recorder

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Kata Calc

Features
Read full description

Kata Calc is an iPhone application to caluculate WKF (World Karate Federation) Karate Kata Competition in old rule (point system).

About

Kumite Recorder

Features
Read full description

Kumite Recorder records karate kumite matches on iPad and iPhone with a scoreboard overlay burned into the video—so you can review scores and footage together. 【Who it's for】 - Coaches and athletes who want match and practice footage with scores on screen - Anyone filming kumite from the side of the mat with an iPad in landscape 【Features】 ■ Recording - Landscape kumite recording (camera and microphone) - Scoreboard overlay (ippon, waza-ari, yuko, penalties, senshu) and match timer burned into the video - Drag score and record buttons to your preferred positions - Recording aspect ratio: 16:9 or 4:3 (Settings → Recording) ■ Playback & library - Thumbnail list of saved recordings - Playback speed control - Share to other apps ■ Settings - Scoreboard size and color theme - Control panel size - Default match duration - Japanese / English 【Free plan vs Pro】 Free plan - Recording: yes - Playback: latest 2 recordings only - Save to device: no Pro plan (monthly, auto-renewing) - Recording: yes - Playback: all recordings - Save to device (photo library): yes Subscribe or restore from Settings → Plan, or when tapping a locked recording. Manage or cancel anytime: Settings → Apple ID → Subscriptions on your device. Use "Restore purchases" to restore a previous subscription. 【Your data】 Recordings are stored on your device only (not uploaded to our servers). Deleting the app removes in-app recordings. Camera and microphone are used for recording. Photo library is used only for Pro save-to-device. No login is required (your Apple ID is used when purchasing or managing the subscription). 【Languages】 Japanese and English (switchable in the app) For feedback or to report issues, please contact us via the support page below. Support: https://note.com/morning_m/n/n7f9ed14ae67e Privacy Policy: https://note.com/morning_m/n/n46731a8e8c29 Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Kata Calc1 screens
Kumite Recorder4 screens

Verdict

The call

The clearest difference is in-app purchases: Kata Calc at none against Kumite Recorder's 1. Kata Calc also leads on iOS requirement (9.3 vs 15.0). Kumite Recorder's advantage is update cadence (every 11 days vs every 7 months). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Kumite Recorder sells 1 in-app purchase, starting at $0.99 per month. Kata Calc asks for nothing beyond the download.

UpkeepUpdate frequency

Kata Calc ships an update every 7 months, Kumite Recorder every 11 days. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 3 level
Kata Calc versus Kumite Recorder: the parameters behind the verdict, then further details
ParameterKata CalcKumite Recorder
PriceFreeFree
Update frequencyEvery 7 monthsEvery 11 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS9.3 — better15.0
Further details — not scored
Size2 MB21 MB
Age rating4+4+
Developerokashige0319Tomoya Matsubara

In-app purchases

None

Kata Calc

No in-app purchases

1 purchases

Kumite Recorder

Subscriptions1
  • Kumite Recorder Pro$0.991 Month

Questions

Is Kata Calc free?
Kata Calc is free to download, with no in-app purchases.
Is Kumite Recorder free?
Kumite Recorder is free to download, with in-app purchases available.
Do Kata Calc or Kumite Recorder have ads?
Neither Kata Calc nor Kumite Recorder shows ads.
Which is updated more often, Kata Calc or Kumite Recorder?
Kata Calc ships an update every 7 months, and Kumite Recorder every 11 days. Most recently, Kata Calc was updated on November 6, 2026 and Kumite Recorder on November 5, 2026.

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