Comparison

O vs デスステップ

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

Head to head
About

O

Read full description

* Measure your chewing age! * This application is only available for devices that support ARKit FaceTracking (FaceID-enabled devices or devices with Apple A13 Bionic chip or later). Please check the Compatible Devices section of our website (https://www.morson.jp/o-trainer/) for supported models. O-TRAINER is an application that supports your chewing training. It has been created to help those who want to improve their chewing and swallowing ability. Training the ability to chew and swallow not only helps prevent aspiration pneumonia and oral frail. It also extends healthy life span and makes it possible to enjoy eating and talking more. Let's use the O-TRAINER, chew a lot, and stay healthy! With the O-TRAINER, you can * Train your mouth * Measure your chewing age by facing the device's camera while taking a meal * Measure the number of times you chew and the speed at which you chew. * Look back on your meal records

About

デスステップ

A monthly survival step game where participants aim to reach 10,000 steps daily to avoid elimination. Survive until the end of the month to achieve a record. Integrates with HealthKit for automatic step counting and features real-time updates on survivor numbers and rankings.

Highlights
  • Monthly survival step challenge
  • Daily 10,000 step goal
  • HealthKit integration
  • Real-time step count and survivor tracking
  • Ranking of survivors and eliminated players
  • Record keeping for eliminated players
Features
Read full description

毎日1万歩、歩けなければ死。 デスステップは、月イチ開催のサバイバル歩数ゲームです。 ■ ルールはシンプル ・毎月1日 0:00、参加者全員が「生存」状態でスタート ・1日の歩数が10,000歩未満だったら、その日をもって脱落。復活はなし ・月末日まで生き残れたら「生存達成」。記録が刻まれる ■ 特徴 ・ヘルスケア(HealthKit)と連携。歩数は自動でカウント ・歩いた瞬間に増えるリアルタイム歩数リング ・生存者数はリアルタイム集計。仲間が減っていく緊張感 ・ランキングで生存者・脱落者・来月の挑戦者が一目瞭然 ・脱落しても墓石とともに記録が残る。それすらシェアのネタになる ・手入力された歩数はカウントしない不正対策つき ■ こんな人に ・運動習慣が三日坊主で終わる人 ・「今日くらいいいか」に負けたくない人 ・友達と歩数で勝負したい人 明日も生き延びろ。

Screenshots

O4 screens
デスステップ4 screens

Verdict

The call

The clearest difference is in-app purchases: デスステップ at none against O's 2. デスステップ also leads on update cadence (every 2 days vs every 2 weeks). On price, ads, device support and iOS requirement 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. O sells 2 in-app purchases, starting at $2.99 per month. デスステップ asks for nothing beyond the download.

UpkeepUpdate frequency

O ships an update every 2 weeks, デスステップ every 2 days. The most recent releases landed on October 14, 2026 and October 18, 2026 respectively.

Scorecard2 real differences · 6 level
O versus デスステップ: the parameters behind the verdict, then further details
ParameterOデスステップ
PriceFreeFree
Positive reviews—100.0% of reviews
Update frequencyEvery 2 weeksEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size49 MB33 MB
Age rating12+12+
DeveloperMorson JapanYuki Sako

In-app purchases

2 purchases

O

Subscriptions1
  • プレミアムプラン(1ヶ月)$2.991 Month
One-time1
  • 広告を削除$2.99
None

デスステップ

No in-app purchases

Questions

Is O free?
O is free to download, with in-app purchases available.
Is デスステップ free?
デスステップ is free to download, with no in-app purchases.
Do O or デスステップ have ads?
Neither O nor デスステップ shows ads.
Which is updated more often, O or デスステップ?
O ships an update every 2 weeks, and デスステップ every 2 days. Most recently, O was updated on October 14, 2026 and デスステップ on October 18, 2026.

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