Comparison

Grid ToDo vs 15min Change Timer

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

Head to head
About

Grid ToDo

This tool helps you break down large goals into manageable steps using a structured 9x9 grid. It's designed for professionals, athletes, and creators to transform ambitions into actionable plans for various life areas.

Highlights
  • Structured 9x9 grid system
  • Break down goals into 64 actions
  • Adaptable for various life areas
  • Actionable step planning
  • Goal achievement support
Features
Read full description

Grid ToDo Lite — Turn Goals into 64 Actions A powerful goal-achievement tool using a structured 9×9 grid system. Used by entrepreneurs, athletes, creators, and professionals worldwide to break big goals into clear, actionable steps. ◆ How It Works ◆ Step 1: Write your main goal in the center of the grid. Step 2: Identify 8 key categories related to your goal. Step 3: Break each category into 8 specific action items. By filling in 72 actions across a 9×9 grid (8 categories × 9 tiles), you'll transform a vague ambition into a concrete action plan. ◆ Use It Your Way ◆ Whether it's career planning, personal development, study goals, project management, or even brainstorming a lunch menu — the grid adapts to your needs. ◆ Please Note ◆ • We recommend taking a screenshot backup of your data periodically. • We are not responsible for data loss due to device issues or accidental deletion.

About

15min Change Timer

Features
Read full description

「15分チェンジ法」に基づく集中力コントロールタイマー。 好きなこと(Free)とやるべきこと(Work)を15分ずつ交互に繰り返すことで、作業への心理的障壁を下げ、自然な集中状態(フロー)へ導きます。 ▼ 特徴 ・Work → 15分の集中タイム。ノッてきたらそのまま延長OK(フロー状態の証) ・Free → 自由な休憩タイム。超過すると即アラートで Work 復帰を催促 ・ロック画面 & Dynamic Island にタイマーを常時表示 ・Apple Watch の通知からワンタップでモード切替 ・月間の作業時間をカレンダーで振り返り ▼ こんな人におすすめ ・作業を始めるのが億劫な人 ・集中が続かない人 ・ポモドーロ法が合わなかった人 15分だけ、まずは始めてみませんか?

Screenshots

Grid ToDo3 screens
15min Change Timer4 screens

Verdict

The call

The clearest difference is in-app purchases: 15min Change Timer at none against Grid ToDo's 1. 15min Change Timer also leads on ads (none vs shown). On price, 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. Grid ToDo sells 1 one-off in-app purchase. 15min Change Timer asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Grid ToDo versus 15min Change Timer: the parameters behind the verdict, then further details
ParameterGrid ToDo15min Change Timer
PriceFreeFree
Rating4.7 (10 ratings) — better—
Positive reviews61.9% of reviews—
Number of ratings10 — better—
Update frequencyEvery 3 weeks—
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS16.6 — better17.0
Further details — not scored
Size20 MB1 MB
Age rating4+4+
DeveloperNAOKI YUSAHiroki Muranaka

In-app purchases

1 purchases

Grid ToDo

One-time1
  • Hide Ads$2.99
None

15min Change Timer

No in-app purchases

Questions

Is Grid ToDo free?
Grid ToDo is free to download, with in-app purchases available.
Is 15min Change Timer free?
15min Change Timer is free to download, with no in-app purchases.
Do Grid ToDo or 15min Change Timer have ads?
Grid ToDo shows ads; 15min Change Timer does not.

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