Rocket 135 vs One Big Thing
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rocket 135
This productivity tool helps you prioritize your daily tasks using the 1-3-5 rule, focusing on one big, three medium, and five small accomplishments. It encourages effective time management by making you choose what truly matters each day.
- 1-3-5 task prioritization strategy
- Focus on essential daily accomplishments
- Encourages effective time management
- Helps identify high-impact tasks
- User-friendly interface
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Rocket 135 is a productivity tool that uses a brilliant strategy to make you do all the things you want to do by following a concept shared by The Muse. The 1-3-5 rule: On any given day, assume that you can only accomplish one big thing, three medium things, and five small things, and narrow down your to-do list to those nine things. Like it or not, you only have so many hours in the day, and you’re only going to get a finite number of things done. Forcing yourself to choose a 1-3-5 list means the things you accomplish will be the things you chose to do — rather than what happened to get done. The point is, prioritisation works. So, give this strategy a try and spend the rest of your days this week focusing on the few things that matter most. You will be surprised by how much you actually get done. EULA: https://www.rocket135.com/eula Privacy Policy: https://www.rocket135.com/privacy
One Big Thing
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A Todo app with ONE big difference. Set an intention for your day with one big thing. Review your previous Big Things. Receive notifications to remind you to check in on your big thing, and mark it as complete if you've done it.
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Verdict
The clearest difference is in-app purchases: One Big Thing at none against Rocket 135's 6. One Big Thing also leads on ads (none vs shown). Rocket 135's advantage is update cadence (every 2 weeks vs every 2 months) and iOS requirement (15.6 vs 17.6). On price 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
Both are free to download. Rocket 135 sells 6 in-app purchases, starting at $1.99 per month. One Big Thing asks for nothing beyond the download.
Rocket 135 ships an update every 2 weeks, One Big Thing every 2 months. The most recent releases landed on September 11, 2026 and February 23, 2026 respectively.
| Parameter | Rocket 135 | One Big Thing |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (12 ratings) — better | — |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Every 2 weeks — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 17.6 |
| Further details — not scored | ||
| Size | 75 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Tiago Alves | Thomas Chatting |
In-app purchases
Rocket 135
- Monthly Premium Plan$1.991 Month
- Yearly Premium Plan1 Year trial$17.991 Year
- Coffee$0.99
- Smoothie$2.99
- Pizza$7.99
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- Lifetime Premium$34.99
One Big Thing
No in-app purchases
Questions
Is Rocket 135 free?
Is One Big Thing free?
Do Rocket 135 or One Big Thing have ads?
Which is updated more often, Rocket 135 or One Big Thing?
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