A+ Writing Prompts vs String AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
A+ Writing Prompts
This app provides an endless supply of creative writing inspiration for students and teachers. It features multiple prompt generators and a large database of text prompts, all accessible offline. Users can save favorite prompts and easily navigate through them.
- Endless creative writing prompts
- Multiple prompt generators (Scenes, Words, News, etc.)
- Database of 600+ text prompts
- Save favorite prompts
- Offline access
- Supports portrait and landscape
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Writing.Com presents "A+ Writing Prompts", the education version of "Writing Prompts", the iPhone app with an endless supply of creative inspiration! The app includes all of our prompt generators and prompts packs, with no in-app purchases, and at a discounted price, making it perfect for teachers and students. Our prompt generators use scene elements, current events, words, sketches, colors, genres and writing types, unleashing endless random bits of fantasy to fuel your muse. Plus, we've included our database of 600 creative writing prompts so you've got them right at your finger tips, online or off! Shake your device or swipe across the screen to change prompts. Add the prompts you like best to your favorites and revisit them at any time. ** Writing teachers: This app put an endless supply of writing activities right at your finger tips! ** Five prompt generators: Scenes, Sketches, Texts, Words and News. Store your favorite prompts into the "Fav's" tab by tapping the favorite star on any prompt. ** Includes over 1,250 scene elements, 2,000 words, 460 sketches, 60 colors, 80+ genres and more -- all of which generate billions and billions of unique prompts. ** Includes 600 text prompts. This assortment of phrases, quotes, writing exercises, story openers and much more will help jump start your writing muse. ** Store an unlimited number of prompts in your "Favorite Prompts". Quickly swipe back and forth to page through them. ** Prompt generators support both portrait and landscape orientations. ** Multitasking support! Switch to another app and back, Writing Prompts resumes quickly right to where you left off. ** Swipe left-to-right to go back to previous prompt! (This is an option in the settings area that can be switched to right-to-left swipe or turned off completely.) This app is sure to help teachers and students fight writer's block and get their creativity flowing! Write on! http://www.Writing.Com/
String AI
This AI-powered coach provides real-time feedback on your violin, viola, or cello practice, analyzing intonation, rhythm, tone, dynamics, and posture. It structures your sessions like a lesson, diagnoses issues, and prescribes targeted drills to improve your playing habits.
- Real-time note and form analysis
- Five-axis scoring (intonation, rhythm, tone, dynamics, posture)
- Instrument-specific feedback for violin, viola, cello
- Personalized practice session planning
- Targeted drills for weak spots
- Optional teacher integration for progress sharing
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String AI is an AI practice coach built exclusively for violin, viola, and cello. It listens to every note, watches your form, scores every attempt, and tells you exactly what to fix — in real time. Its scoring standards were designed and reviewed together by violin, viola, and cello teachers trained at Curtis, Colburn, Seoul National University, Eastman, Manhattan School of Music, USC, and CIM. The standard a world-class teacher holds you to, applied to every minute you practice. THE STRUCTURE OF A LESSON, EVERY TIME YOU PRACTICE String AI plans your session, scores each attempt across five axes, diagnoses what needs work, and prescribes drills that target it. You always know what to work on next — and why. GOOD PRACTICE HABITS, BUILT IN Set a target date for any piece and String AI paces you to it — planning each day's session, tracking whether you're ahead or behind, and warning you early if the timeline isn't realistic. Spots that need work aren't glossed over: the AI isolates them into short drills just a few measures long and has you repeat exactly those spots. This is how serious players practice — and the app makes it a habit. WHAT IT SCORES (5 AXES + SUPPORTING) • Intonation — real-time pitch tracking, note by note • Rhythm — timing and steadiness • Tone — clarity and quality of sound • Dynamics — control of loud and soft • Posture & bowing — on-device vision analysis of your form Supporting checks such as vibrato complete the picture, so your next priority is always clear. BUILT FOR STRINGS — NOT A GENERIC MUSIC APP Violin, viola, and cello each receive instrument-specific analysis, tuned to how the instrument is actually played. WORKS WITH YOUR TEACHER (OPTIONAL) Enter your teacher's invite code and the week between lessons stops being a blind spot. Your teacher sees your practice time, five-axis scores, weak points, and assignment progress — and can send back assignments, teaching notes that steer the AI coach toward what they want you working on, and markings written directly on your sheet music. Off by default, on only once you enter the code, and revocable at any time. Recordings are not shared with your teacher. YOUR SOUND NEVER LEAVES YOUR DEVICE Audio and video are processed on your device and are not uploaded to our servers. Lesson replays are temporary. Practice Room recordings are saved on this device when you stop recording and can be deleted in the app. Your account stores practice records and the limited data described in our Privacy Policy. No ads. No tracking across apps. PLANS Start with a 7-day free trial, then choose a plan by daily practice volume. Each plan includes a daily baseline and a monthly total: practice up to three times your baseline on busy days, and unused minutes carry forward within your monthly total. • Basic — 15 min/day baseline · 450 min/month • Casual — 30 min/day baseline · 900 min/month • Standard — 45 min/day baseline · 1,350 min/month Subscriptions renew automatically; cancel anytime in your account settings. Terms of Use (EULA): https://youna-string.github.io/stringai-legal/terms-of-service.html Privacy Policy: https://youna-string.github.io/stringai-legal/privacy-policy.html For a fraction of the cost of a single private lesson, String AI coaches every practice session, every day. From beginners building intonation to advanced players refining tone — make every minute count. Students under 14 require a parent's consent before use, in line with children's privacy laws.
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Verdict
The clearest difference is price: String AI at Free against A+ Writing Prompts's $3.99. String AI also leads on update cadence (every 2 weeks vs every 4 months) and rating (4.2 vs 3.9). A+ Writing Prompts's advantage is in-app purchases (none vs 4) and iOS requirement (8.0 vs 15.1). On ratings volume, 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
String AI is free to download; A+ Writing Prompts costs $3.99 up front. String AI sells 4 in-app purchases, starting at $14.99 per month. A+ Writing Prompts asks for nothing beyond the download.
String AI holds the better App Store score, 4.2 against 3.9. Both are backed by a comparable volume of ratings — 9 and 5 respectively. Written reviews point the same way: 60% of A+ Writing Prompts's written reviews are positive against 80% of String AI's.
A+ Writing Prompts ships an update every 4 months, String AI every 2 weeks. The most recent releases landed on September 23, 2026 and October 12, 2026 respectively.
| Parameter | A+ Writing Prompts | String AI |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 3.9 (9 ratings) | 4.2 (5 ratings) — better |
| Positive reviews | 60.0% of reviews | 80.0% of reviews — better |
| Number of ratings | 9 — better | 5 |
| Update frequency | Every 4 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 20 MB | 95 MB |
| Age rating | 12+ | 4+ |
| Developer | 21x20 Media, Inc. | Youna Choi |
Customer experience
A+ Writing Prompts
String AI
In-app purchases
A+ Writing Prompts
No in-app purchases
String AI
- Basic$14.991 Month
- Casual$29.991 Month
- Standard$44.991 Month
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- Pro$59.991 Month
Questions
Is A+ Writing Prompts free?
Is String AI free?
Which has better reviews, A+ Writing Prompts or String AI?
Do A+ Writing Prompts or String AI have ads?
Which is updated more often, A+ Writing Prompts or String AI?
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