30 Day Back Ext. Challenge! vs 禅Labo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
30 Day Back Ext. Challenge!
This app helps you track your daily back extensions for a 30-day challenge. It allows you to count your exercises, manage your progress, and receive notifications. You can also record active energy and workouts to Apple Health.
- Count back extensions daily
- Manage achievement days
- Receive notifications
- Record active energy
- Sync with Apple Health
- Track workouts
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Supports Back Extension for 30 day challenge. Main function is to count Back Extension once a day. Main Function ・Count Back Extension. ・Achievement days management. ・Notifications. ・Record Active Energy and Workouts to Apple Health. How to use ・Put iPhone on floor. ・Tap screen. ・Keep your face close to iPhone screen. (Upper part) * ・Or count on iPhone screen tap. Active Energy ・Ex. METs 3.5, Weight 50 kg, Time 10 min. (3.5 - 1) x 50 x (10 / 60) x 1.05 = 21.86 kcal. Optional permission requests ・Apple Health: It is used to record data in Apple Health. ・Tracking: It is used to deliver personalized ads to you. ・Notifications: It is used to sending notifications. Languages ・Japanese, English. *Dynamic Island devices not supported
禅Labo
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■ 禅Labo - 禅の瞑想をもっと身近に 「禅Labo」は、誰でも手軽に禅の瞑想を始められるアプリです。 アカウント登録不要。ダウンロードしたらすぐに瞑想を始められます。 ■ 主な機能 【瞑想タイマー】 ・5分〜30分まで自由に設定 ・16種類の環境音（自然音・ヒーリング等） ・集中できる音を選んで瞑想に没入 【呼吸ガイド】 ・4秒吸う→4秒止める→6秒吐くのリズムで呼吸を整える ・アニメーションに合わせて自然にリラックス 【座禅の姿勢ガイド】 ・正しい座禅の姿勢を7ステップで解説 ・初めての方でも迷わず取り組める 【毎日の禅語】 ・日替わりで心に響く禅の言葉を表示 ・日々の気づきのきっかけに 【瞑想の記録】 ・毎日の瞑想をスタンプで記録 ・続けるほどスタンプが解放される達成感 【リマインダー】 ・毎日決まった時間に瞑想の通知 ・習慣化をサポート ■ こんな方におすすめ ・瞑想を始めてみたいけど何からやればいいかわからない方 ・日々のストレスを解消したい方 ・集中力を高めたい方 ・寝る前のリラックスタイムを充実させたい方 ・禅や日本文化に興味がある方 ■ 完全無料 すべての機能を無料でご利用いただけます。 ■ お問い合わせ ご質問・ご要望がございましたら、下記までお気軽にご連絡ください。 メール: bullinc.app@gmail.com
Screenshots
Verdict
The clearest difference is update cadence: 禅Labo at every 3 days against 30 Day Back Ext. Challenge!'s every 3 months. 禅Labo also leads on device support (3 vs 1). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
30 Day Back Ext. Challenge! ships an update every 3 months, 禅Labo every 3 days. The most recent releases landed on November 11, 2026 and November 5, 2026 respectively.
| Parameter | 30 Day Back Ext. Challenge! | 禅Labo |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) — better | — |
| Positive reviews | 46.2% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 3 months | Every 3 days — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 24 MB | 288 MB |
| Age rating | 17+ | 4+ |
| Developer | Intersect | Ken Matsuda |
In-app purchases
30 Day Back Ext. Challenge!
No in-app purchases
禅Labo
No in-app purchases
Questions
Is 30 Day Back Ext. Challenge! free?
Is 禅Labo free?
Do 30 Day Back Ext. Challenge! or 禅Labo have ads?
Which is updated more often, 30 Day Back Ext. Challenge! or 禅Labo?
Other comparisons
