Comparison

Sprint Start Trainer vs なわとびカウンター|縄跳びの回数を自動カウント

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

Head to head
About

Sprint Start Trainer

This app provides tools for solo athletic training, offering customizable interval settings for voice cues like "on your marks," "set," and a pistol sound. It features random timing starts with detailed configuration options to simulate various race scenarios.

Highlights
  • Customizable interval settings
  • Voice cues (on your marks, set, pistol)
  • Random timing start
  • Detailed timing configuration
  • Simulates various race scenarios
Features
Read full description

Practice track sprint and swimming starts with just one phone. Starter Kit is a start-training app for sprinters, swimmers, and coaches. It does more than play start signals: it lets you measure reaction time on video and review start technique. In Timing and Random modes, each video frame displays the time relative to the moment the start sound plays, with that moment set to zero. Read the displayed time on the frame where the athlete first moves to measure reaction time, then review technique in the same video. With fixed or randomized signal intervals, you can practice track block starts and swimming dive starts on your own or with a team. WHO IS IT FOR? • 100 m and 200 m sprinters • Track athletes who want to practice block starts • Swimmers who want to practice dive starts and improve their response to the start signal • Track-and-field coaches and swimming coaches running start drills • Athletes who want to improve reaction time and start technique KEY FEATURES ■ Video reaction-time measurement and technique review In Timing and Random modes, Starter Kit adds a timer to every video frame, using the start signal as zero. Read the value displayed on the frame showing the athlete's first visible movement to measure reaction time and review start technique. Videos can be saved to Photos, and recording can continue for up to 90 seconds after the start sound finishes. With up to 90 seconds of recording, you can also use the on-video timer to measure an accurate start-to-finish time. ■ Three start signal sounds Choose a pistol sound, swimming start beep, or electronic start sound to match your sport or training session. The swimming beep makes Starter Kit useful for swimming start practice as well as track sprint starts. ■ Timing mode: fixed intervals Set the timing between “On your marks,” “Set,” and the start signal. Repeat the same start sequence for individual or team practice. ■ Random mode: randomized intervals Randomize the intervals between “On your marks,” “Set,” and the start signal. The timing varies within your chosen range so athletes can practice reacting without anticipating the signal. ■ Manual mode: individual cues Play “On your marks,” “Set,” and the start signal separately. Use it for coach-led or group drills, or play the swimming start beep on its own at the pool. ■ Automatic repeat starts In Timing and Random modes, run start sequences repeatedly at an adjustable interval for efficient practice sets. Starter Kit turns your phone into a portable start-training tool for the track or poolside—no dedicated starting system required. Automatic repeat starts and custom recording durations require an upgrade.

About

なわとびカウンター|縄跳びの回数を自動カウント

Features
Read full description

なわとびカウンターは、なわとびを跳んだ回数をiPhoneが自動で数えるアプリです。 「いち、に、さん…」と数えながら見ていると、途中で分からなくなる。 なわとびカードの回数を、親が数えて書くのが大変。 そんな冬の定番のお悩みを、iPhoneひとつで解決します。 ■ 2つの数え方 ・カメラ:iPhoneを立てかけるか、おうちの人が構えるだけ。体の動きを見て自動で数えます。映像は保存も送信もしません ・ポケット:iPhoneをポケットに入れて跳ぶだけ。ひとりでも数えられます ■ 声で応援 10回ごとに「じゅっかい」「にじゅっかい」と読み上げるので、画面を見なくても分かります。 跳ぶたびにカウント音、おわったらファンファーレ。 ■ なわとびカードと同じ合格表 まえとび・うしろとび・かけ足とび・交差とび・あやとび・二重とびの6種類。 10回・20回・30回・50回・100回…と、学校のなわとびカードと同じ刻みで合格が増えていきます。 ■ 二重とびを自動で判定 跳んでいる時間の長さから、二重とびを推定して別に数えます。 ■ 30秒・1分チャレンジ 決まった時間で何回跳べるか。自己ベストの更新を目指せます。 ■ きろく 跳んだ回数は日ごとに残り、2週間のグラフで成長が見えます。 結果は画像にしてシェアできます。 ■ きょうだいで使える 名前を登録して、ひとりずつ記録を分けられます。 【無料でできること】 まえとびの自動カウントと、直近7日ぶんの記録は、無料のままずっとお使いいただけます。 【ぜんぶ解放(400円・買い切り)】 ・二重とびの自動判定 ・30秒・1分チャレンジ ・なわとびカード(技ごとの合格表) ・記録の無制限保存と2週間グラフ ・きょうだいの登録(何人でも) 月額料金はありません。広告も表示しません。 【ご注意】 回数はカメラや動きから推定したもので、実際の回数と数回ずれることがあります。正式な記録は人が数えて確認してください。 なわとびは、周囲に人や物のない安全な場所で行ってください。 【プライバシー】 カメラの映像は回数を数えるためだけに端末の中で処理し、保存も送信も一切しません。記録も端末の中だけに保存します。

Screenshots

Sprint Start Trainer3 screens
なわとびカウンター|縄跳びの回数を自動カウント4 screens

Verdict

The call

The clearest difference is ads: なわとびカウンター|縄跳びの回数を自動カウント at none against Sprint Start Trainer's shown. なわとびカウンター|縄跳びの回数を自動カウント also leads on update cadence (weekly vs every 3 weeks) and iOS requirement (16.0 vs 18.0). On price, in-app purchases 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. Sprint Start Trainer sells 1 one-off in-app purchase and なわとびカウンター|縄跳びの回数を自動カウント sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Sprint Start Trainer ships an update every 3 weeks, なわとびカウンター|縄跳びの回数を自動カウント weekly. The most recent releases landed on November 8, 2026 and November 1, 2026 respectively.

Scorecard3 real differences · 7 level
Sprint Start Trainer versus なわとびカウンター|縄跳びの回数を自動カウント: the parameters behind the verdict, then further details
ParameterSprint Start Trainerなわとびカウンター|縄跳びの回数を自動カウント
PriceFreeFree
Rating4.9 (16 ratings) — better—
Positive reviews90.0% of reviews—
Number of ratings16 — better—
Update frequencyEvery 3 weeksWeekly — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad — better
Requires iOS18.016.0 — better
Further details — not scored
Size27 MB3 MB
Age rating4+4+
DeveloperKoki OsadaJUNYA TOGA

In-app purchases

1 purchases

Sprint Start Trainer

One-time1
  • Remove Ads$4.99
1 purchases

なわとびカウンター|縄跳びの回数を自動カウント

One-time1
  • ぜんぶ解放$1.99

Questions

Is Sprint Start Trainer free?
Sprint Start Trainer is free to download, with in-app purchases available.
Is なわとびカウンター|縄跳びの回数を自動カウント free?
なわとびカウンター|縄跳びの回数を自動カウント is free to download, with in-app purchases available.
Do Sprint Start Trainer or なわとびカウンター|縄跳びの回数を自動カウント have ads?
Sprint Start Trainer shows ads; なわとびカウンター|縄跳びの回数を自動カウント does not.
Which is updated more often, Sprint Start Trainer or なわとびカウンター|縄跳びの回数を自動カウント?
Sprint Start Trainer ships an update every 3 weeks, and なわとびカウンター|縄跳びの回数を自動カウント weekly. Most recently, Sprint Start Trainer was updated on November 8, 2026 and なわとびカウンター|縄跳びの回数を自動カウント on November 1, 2026.

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