Comparison

Schulte Grid vs Otso

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

Head to head
About

Schulte Grid

Features
Read full description

Schulte Grid is a brain training app based on the Schulte Table method, designed to improve your attention, focus, and reading speed. HOW IT WORKS Find numbers 1-25 in order as fast as you can. This simple yet powerful exercise trains your visual perception, peripheral vision, and concentration. FEATURES • Classic 5×5 Schulte Table training • Multiple grid sizes: 3×3, 4×4, 5×5, 6×6, 7×7 • Four theme styles including vibrant Colorful theme (Pro) • Text difficulty modes: standard, varied size, rotated, chaos (Pro) • Timer pauses when app goes to background • Detailed performance statistics and history • Track your progress over time • Pro version with advanced features TRAINING BENEFITS • Improves attention and concentration • Enhances reading speed • Develops peripheral vision • Builds mental agility • Suitable for all ages Start your brain training journey today! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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

Schulte Grid4 screens
Otso4 screens

Verdict

The call

The clearest difference is price: Schulte Grid at Free against Otso's $0.99. Schulte Grid also leads on iOS requirement (16.0 vs 18.0). Otso's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence 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

Schulte Grid is free to download; Otso costs $0.99 up front. Schulte Grid sells 1 one-off in-app purchase. Otso asks for nothing beyond the download.

UpkeepUpdate frequency

Schulte Grid ships an update every 5 weeks, Otso every 3 weeks. The most recent releases landed on October 1, 2026 and October 11, 2026 respectively.

Scorecard5 real differences · 5 level
Schulte Grid versus Otso: the parameters behind the verdict, then further details
ParameterSchulte GridOtso
PriceFree — better$0.99
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 5 weeksEvery 3 weeks — better
AdsYesNo — better
In-app purchasesYesNo — better
Monetization—Paid
DevicesiPhone, iPadiPhone, iPad, Mac, Apple Watch — better
Requires iOS16.0 — better18.0
Further details — not scored
Size6 MB5 MB
Age rating4+4+
Developer景珂 陈SIMON HEUSCHKEL

In-app purchases

1 purchases

Schulte Grid

One-time1
  • Pro$1.99
None

Otso

No in-app purchases

Questions

Is Schulte Grid free?
Schulte Grid is free to download, with in-app purchases available.
Is Otso free?
Otso costs $0.99, with no in-app purchases.
Do Schulte Grid or Otso have ads?
Schulte Grid shows ads; Otso does not.
Which is updated more often, Schulte Grid or Otso?
Schulte Grid ships an update every 5 weeks, and Otso every 3 weeks. Most recently, Schulte Grid was updated on October 1, 2026 and Otso on October 11, 2026.

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