PSM I vs Posso
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PSM I
Prepare for your Professional Scrum Master 1 (PSM 1) certification with a comprehensive study tool. It offers realistic exam practice with randomized questions, a large question bank, and the official Scrum Guide. Achieve certification success efficiently and affordably.
- Randomized practice tests
- Extensive question bank
- Integrated Scrum Guide
- Affordable pricing options
- Focus on exam results
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Master Scrum and pass PSM I on your first attempt! PSM I is the most effective and up-to-date iOS app to help you prepare for the Professional Scrum Master I (PSM I) certification from Scrum.org. Why users love PSM I: 1,200+ real exam-style questions updated for 2025–2026 5 full exam simulations (80 questions, 60 minutes — exactly like the real test) Smart spaced repetition system to help you remember key concepts Detailed explanations for every question Track your progress and identify weak areas instantly Works completely offline What you’ll achieve: Deep understanding of the Scrum Guide Confidence answering tricky situational questions Ability to finish the real exam in 40–50 minutes with 90%+ score Join thousands of professionals who have successfully passed PSM I using this app. The content is regularly updated to stay 100% aligned with the latest Scrum Guide and exam format. Ready to become a certified Professional Scrum Master? Download PSM I Prep today and pass with confidence!
Posso
This app helps children complete daily tasks by earning stars for completed chores, which can then be redeemed for rewards. It allows parents to customize chore lists, set up reward systems, and track their children's progress. The app also includes features for managing pet care and a unique swear jar functionality.
- Personalized daily chore lists for each child
- Star-based reward system
- Customizable reward options
- Progress tracking and activity logs
- Pet chore management
- Parental PIN protection
- Swear jar feature
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Posso gives each kid their own list for the day and a reason to get through it. They check off what is theirs to do, earn stars for each one, and spend those stars on rewards you have set up ahead of time. If they skip the work, there is no prize, and they figure that out fast. The list only shows what matters right now. In the morning they see morning chores, and the afternoon and evening ones stay folded away until it is time. Bigger jobs like tidying a room can carry a short checklist underneath, so "clean your room" turns into three specific things instead of an argument about what clean means. Everything else sits behind a parent PIN. That is where you decide who does what on which days, using one grid for the whole family. You choose how rewards work: a star bank with a prize list, a weekly allowance based on how much of the goal they hit, or plain tracking with no rewards at all. Each kid has a page with charts and an activity log, so you can see how the week is going without asking. If you have a dog, a cat, a fish, a bird, a hamster, or a rabbit, tell Posso once and the pet chores are added with age-appropriate defaults. There is also a swear jar, off unless you turn it on, and it works both ways. A kid's slip costs a few stars. A parent's slip puts money in the jar or pays stars out to every kid, and yes, the kids can report you. Posso works on iPad and iPhone, and your family's data syncs between your own devices through iCloud, as long as they are signed into the same iCloud account. There is no account to create, no server, no analytics, and no ads. Nothing leaves your devices except through your private iCloud, where nobody else can see it, not even us.
Screenshots
Verdict
The clearest difference is in-app purchases: Posso at none against PSM I's 2. On price, update cadence, ads 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. PSM I sells 2 one-off in-app purchases. Posso asks for nothing beyond the download.
PSM I ships an update every 6 weeks, Posso every 4 weeks. The most recent releases landed on June 11, 2026 and September 10, 2026 respectively.
| Parameter | PSM I | Posso |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Every 6 weeks | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 18.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 31 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Konstantin Skoblik | OMC Studio LLC |
Customer experience
PSM I
Posso
In-app purchases
PSM I
- One Time Access$0.99
- Unlock PRO Mode$3.99
Posso
No in-app purchases









