NumBots vs Jarful
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NumBots
This platform helps children master mental addition and subtraction, moving them from counting to calculating. It focuses on building understanding, recall, and fluency in these core math skills. Designed for early learners, it offers an engaging way to achieve mathematical proficiency.
- Master mental addition
- Master mental subtraction
- Build understanding
- Develop recall
- Achieve fluency
- Transition from counting to calculating
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Addition & Subtraction. Solved. From the innovators who bring you Times Tables Rock Stars, comes a highly engaging platform for learning to add and subtract… NumBots! NumBots is all about every child achieving the “triple win” of understanding, recall and fluency in mental addition and subtraction, so that they move from counting to calculating. Suitable from Year 1 (UK) or Kindergarten (US) upwards. Younger players will be able to access the early stages from a mathematical point of view but will find it increasingly harder to reach the level of fluency required to make continued progress.
Jarful
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Jarful is a calm, friendly piggy-bank app that helps young children learn to handle realistic money by counting it, sorting it, and saving up for the things they care about. When a child receives money, they count it themselves with realistic coins and notes. They snap coins into place, combine them, and make change at the little exchange office. Then they divide their money across their own jars: one for a special goal, one just for saving. HOW KIDS USE JARFUL • Count realistic money with hands-on coins and notes • Sort savings into jars with their own goals • Make change at the exchange office • Spend from a jar once they have saved enough, and celebrate • Pick a fun emoji and colour for their profile FOR PARENTS • Add money and set up automatic allowance • Create and manage jars and goals • Everything important sits behind a parent gate (PIN + recovery code) • Works for the whole family with multiple kid profiles PRIVACY FIRST • No ads, no tracking, no analytics • No accounts and no data collection: everything stays on the device • No links out to the web; fully usable offline • Built for the Kids Category, with content suited to ages 6-8 Jarful turns saving into something kids can see and touch, at their own pace.
Screenshots
Verdict
The clearest difference is iOS requirement: NumBots at 15.0 against Jarful's 17.0. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | NumBots | Jarful |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (322 ratings) — better | — |
| Positive reviews | 66.3% of reviews | — |
| Number of ratings | 322 — better | — |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 30 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Maths Circle Ltd | Jeroen van der Wal |
Bugs and requests
NumBots
Reported bugs
5 issues- Coins and stars not tracking correctly
- Login issues across devices
- Keyboard not showing up on tablets
- Levels randomly locked or missing
- App crashing and freezing
Requested features
5 requests- More advanced levels and content
- Ability to skip to appropriate level
- Less emphasis on speed, more on accuracy
- Family account support
- Improved login and persistence
Jarful
Not enough reviews yet to summarise bugs or requests.
In-app purchases
NumBots
No in-app purchases
Jarful
No in-app purchases









