Comparison

Fourth Grade Math Games Kids vs Otso

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

Head to head
About

Fourth Grade Math Games Kids

Features
Read full description

Play to learn math in the most entertaining way, combining operations and activities with our funny pictures. Math games for 4th graders. Suitable for children from USA , Canada , UK , Australia , New Zealand , India, Singapore , Hong Kong, ...  Math practice for kids. It has more than 60 different games to learn math in fourth grade, divided into : - Numbers. - Addition & Subtract. - Fractions & Decimals. - Measurements. - Geometry (polygons and polyhedra ). - Time. - Multiplication. - Division. Learn math with BORIOL! Kids will love this game because it shows numbers, operations , polygons , watches, ... with a nice interface . You'll like it too because this app it is based on the curriculum of fourth grade . Common Core math. Easy to play . You have the option of unlimited play . You can see your progress step by step . Suitable for children 8, 9, 10, 11 years. You can play without internet connection. Users: - Fourth graders (3rd graders or 5th graders, too) - Parents for daily homework - Teachers in the classroom - Homeschoolers This app don't collect any data from user or device, don't include third-party analytics and don't include advertising.

About

Otso

This app provides a visual countdown timer that uses a shrinking colored wedge instead of numbers. It offers various aesthetic designs and tactile feedback, making time management intuitive for all ages. The app is designed for privacy with no accounts or data collection.

Highlights
  • Visual countdown wedge
  • Customizable faces and sounds
  • Dynamic Island and Lock Screen integration
  • No ads or subscriptions
  • Private by design
  • Tactile feedback and animations
Features
Read full description

A colored wedge shrinks as time runs down. See how much is left at a glance, without having to read the numbers or do the math. Buy once and use it on iPhone, iPad, Apple Watch, and Mac. No ads, no subscriptions, no account. No tracking or data collection. MAKE IT YOURS • Choose a dial maximum of 5, 10, 15, 30, 60, or 120 minutes • Count clockwise or counterclockwise • Adjust sound and haptic feedback on supported devices ON iPHONE AND iPAD • Drag the dial to set a timer; tap to start, pause, or resume • Smooth dialing at up to 120 Hz on ProMotion displays • Swipe beside the dial to change faces, or swipe up for settings • Check the countdown on the Lock Screen and, on supported iPhones, in the Dynamic Island • Keep the screen awake while the timer is running in the foreground • Receive a finish notification in the background when notifications are enabled ON APPLE WATCH All fifteen faces, right on your wrist. Turn the Digital Crown to set the time, tap to start or pause, swipe left or right to change faces, and swipe up for settings. The Watch timer works independently of the iPhone timer. ACCESSIBILITY VoiceOver labels and timer actions, keyboard controls on Mac and iPad, and animations that adapt to Reduce Motion. DETAILS YOU CAN FEEL Each face has its own sounds: Wood knocks, Glass chimes, and LCD clicks like a watch button. Flick the dial and it spins on, clicking past each mark as it slows to a stop. On iPhone and iPad, tilting the device changes the reflections. On Mac, they follow the pointer. Party celebrates with confetti, while Aurora adds a soft shimmer. Motion effects are reduced when Reduce Motion is on. FIFTEEN FACES Each has its own character. • Classic — charcoal body, glass lens, red disc • Pastel — soft candy colors and a textured knob • Rainbow — lilac, with an arc that shrinks color by color • Neumorph — soft, sculpted, quiet • Glass — translucent, on a light wall • Flat — pure, bold, no chrome • Paper — warm stationery, an ink needle • Wood — turned walnut, terracotta wedge • LCD — dot matrix on a backlit sage screen • Rugged — machined blades behind thick rubber • Midnight — black with a hot coral glow • Halo — a glowing amber ring • Neon — a magenta glow against the dark • Aurora — a curtain of light over a starfield • Party — a frosted cake that bursts into confetti Otso takes its name from the bear of Finnish folklore. A timer should sit quietly in the room and be understood at a glance. For lessons, workshops, exams, focused work, homework, and cooking — whenever it helps to see time passing.

Screenshots

Fourth Grade Math Games Kids4 screens
Otso4 screens

Verdict

The call

The clearest difference is update cadence: Otso at every 3 weeks against Fourth Grade Math Games Kids's every 12 months. Fourth Grade Math Games Kids's advantage is iOS requirement (11.0 vs 18.0). 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

CostPrice · In-app purchases · Ads · Monetization

Fourth Grade Math Games Kids costs $0.99 and Otso $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Fourth Grade Math Games Kids ships an update every 12 months, Otso every 3 weeks. The most recent releases landed on October 4, 2026 and October 11, 2026 respectively.

Scorecard2 real differences · 8 level
Fourth Grade Math Games Kids versus Otso: the parameters behind the verdict, then further details
ParameterFourth Grade Math Games KidsOtso
Price$0.99$0.99
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 12 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPad, iPodiPhone, iPad, Mac, Apple Watch — better
Requires iOS11.0 — better18.0
Further details — not scored
Size12 MB5 MB
Age rating4+4+
DeveloperMaria Dolores Garcia FerreSIMON HEUSCHKEL

In-app purchases

None

Fourth Grade Math Games Kids

No in-app purchases

None

Otso

No in-app purchases

Questions

Is Fourth Grade Math Games Kids free?
Fourth Grade Math Games Kids costs $0.99, with no in-app purchases.
Is Otso free?
Otso costs $0.99, with no in-app purchases.
Do Fourth Grade Math Games Kids or Otso have ads?
Neither Fourth Grade Math Games Kids nor Otso shows ads.
Which is updated more often, Fourth Grade Math Games Kids or Otso?
Fourth Grade Math Games Kids ships an update every 12 months, and Otso every 3 weeks. Most recently, Fourth Grade Math Games Kids was updated on October 4, 2026 and Otso on October 11, 2026.

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