Comparison

Subtraction Skill Builders vs Learn Cello AI Tutor

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

Head to head
About

Subtraction Skill Builders

Features
Read full description

Elevate your subtraction practice with Subtraction Skill Builders! Experience natural handwriting input and choose between: Math Trainer – a whiteboard to write answers at your own pace 5 fun, engaging Math mini games with adaptive difficulty With Subtraction Skill Builders you can practice and improve the following math skills: - Subtracting 1 - Subtracting 2 - Subtracting 3 - Subtracting 4 - Subtracting 5 - Subtracting 6 - Subtracting 7 - Subtracting 8 - Subtracting 9 - Subtracting 10

About

Learn Cello AI Tutor

Master the cello with an AI tutor offering interactive lessons, fingerboard charts, and instant answers to your cello questions. Ideal for beginners and intermediate players seeking daily improvement without private lessons.

Highlights
  • Interactive beginner lessons
  • Fingerboard charts
  • AI chat for cello questions
  • Smart finger-position overlay
  • Personal stats tracking
Features
Read full description

Master the cello faster with your personal AI tutor. Perfect for beginners and advancing players who want daily improvement without expensive private lessons. FEATURES • Interactive beginner lessons • Fingerboard charts for every position • AI chat: ask any cello question, get instant answers UPGRADE TO PREMIUM Unlimited AI lessons KEY FEATURES Smart finger-position overlay for 1st–7th positions Personal stats WHO IS IT FOR? Adult beginners starting from scratch Students preparing for ABRSM / Trinity / school auditions Intermediate cellists polishing shifts & vibrato Teachers who want students to get feedback between lessons Subscription Terms: - Monthly: $4.99/month - Yearly: $29.99/year - Payment charged to iTunes Account at confirmation - Subscription auto-renews unless canceled 24 hours before period end Privacy Policy: https://docs.google.com/document/d/1lQlCl8pb9MEtbrCEKQgrqMorDgQ6GNnn1c1rGX0DqSM/edit?usp=sharing Terms of Use: https://docs.google.com/document/d/1Eb1w676GC7n7btjai_I1aqnp9LYFSBWUn2mev-FCtHg/edit?usp=sharing

Screenshots

Subtraction Skill Builders4 screens
Learn Cello AI Tutor4 screens

Verdict

The call

The clearest difference is price: Learn Cello AI Tutor at Free against Subtraction Skill Builders's $2.99. Learn Cello AI Tutor also leads on update cadence (every 4 months vs every 28 months). Subtraction Skill Builders's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 15.1). On 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

CostPrice · In-app purchases · Ads · Monetization

Learn Cello AI Tutor is free to download; Subtraction Skill Builders costs $2.99 up front. Learn Cello AI Tutor sells 2 in-app purchases, starting at $4.99 per month. Subtraction Skill Builders asks for nothing beyond the download.

UpkeepUpdate frequency

Subtraction Skill Builders ships an update every 28 months, Learn Cello AI Tutor every 4 months. The most recent releases landed on October 31, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
Subtraction Skill Builders versus Learn Cello AI Tutor: the parameters behind the verdict, then further details
ParameterSubtraction Skill BuildersLearn Cello AI Tutor
Price$2.99Free — better
Rating—1.0 (2 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 28 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Subscription
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.1
Further details — not scored
Size18 MB44 MB
Age rating4+4+
DeveloperSergey MaluginBrittney Pilarcik

In-app purchases

None

Subtraction Skill Builders

No in-app purchases

2 purchases

Learn Cello AI Tutor

Subscriptions2
  • Monthly Subscription$4.991 Month
  • Yearly Premium$29.991 Year

Questions

Is Subtraction Skill Builders free?
Subtraction Skill Builders costs $2.99, with no in-app purchases.
Is Learn Cello AI Tutor free?
Learn Cello AI Tutor is free to download, with in-app purchases available.
Do Subtraction Skill Builders or Learn Cello AI Tutor have ads?
Neither Subtraction Skill Builders nor Learn Cello AI Tutor shows ads.
Which is updated more often, Subtraction Skill Builders or Learn Cello AI Tutor?
Subtraction Skill Builders ships an update every 28 months, and Learn Cello AI Tutor every 4 months. Most recently, Subtraction Skill Builders was updated on October 31, 2026 and Learn Cello AI Tutor on October 30, 2026.

Other comparisons