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
Read full descriptionHide full description
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
Read full descriptionHide full description
String AI is an AI practice coach built exclusively for violin, viola, and cello. It listens note by note, watches your form, scores every attempt, and tells you what to fix as soon as you finish. The same scoring standards are applied to every attempt you play. THE STRUCTURE OF A LESSON, EVERY TIME YOU PRACTICE String AI plans your session, scores each attempt on five playing elements, diagnoses what needs work, and prescribes missions that target it. You always know what to work on next — and why. MUSIC CLASSES — EAR TRAINING, THEORY, HISTORY & VIBRATO Learn what practice alone rarely covers. Hear everything from intervals to harmony with real piano sounds and see it on the keyboard and staff, meet composers from the Renaissance to the 20th century, and develop vibrato step by step on your own instrument. Quizzes and stars show how far you've come. MY SCORES — LESSONS ON YOUR OWN PRINTED PART Bring in a printed part for your instrument from Files, your photo library, or the camera. The app reads the notes on your phone, and you fix what it misread with simple tools. Then listen, slowed down if you like, and take a lesson on measures you choose: one play-through, then missions on the weak spots. Your music stays on this device. A connected teacher sees your practice time; if you share titles, they also see the title you give it and its instrument — never the music — and can assign it as homework. For student accounts and printed single-instrument parts. BUILD GOOD PRACTICE HABITS 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: String AI isolates them into short missions just a few measures long and has you repeat exactly those spots. WHAT IT SCORES (5 PLAYING ELEMENTS) • 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 WORKS WITH YOUR TEACHER (OPTIONAL) Your teacher sees your practice time, scores for the five playing elements, weak points, practice journal notes and mood, and assignment progress (the full list is in our Privacy Policy) — and can send back assignments, teaching notes you see on your practice plan screen (with AI coaching on, the AI guidance at lesson start uses them too), and markings written directly on your sheet music. Off by default, on only once you enter your teacher's invite code, and revocable at any time. Recordings are not shared with your teacher. YOUR RECORDINGS ARE NEVER UPLOADED TO OUR SERVERS Audio and video are processed on your device. Lesson replays are temporary. Practice Room recordings are saved on this device when you stop recording and can be deleted in the app. If you choose Save video, a copy goes to your photo library and follows your photo app's settings. 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 (same practice limits as Basic), then choose a plan by daily practice volume. Each plan includes a daily baseline and a monthly total: practice less on busy days and up to three times your baseline on free 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 App Store subscription 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 Students under 14 require a parent's consent before use, in line with children's privacy laws.
Screenshots
Verdict
The clearest difference is price: String AI at Free against A+ Writing Prompts's $3.99. String AI also leads on rating (4.3 vs 3.9) and update cadence (every 3 weeks vs every 4 months). 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 $13.99 per month. A+ Writing Prompts asks for nothing beyond the download.
String AI holds the better App Store score, 4.3 against 3.9. Both are backed by a comparable volume of ratings — 9 and 6 respectively. Written reviews point the same way: 60% of A+ Writing Prompts's written reviews are positive against 83% of String AI's.
A+ Writing Prompts ships an update every 4 months, String AI every 3 weeks. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.
| Parameter | A+ Writing Prompts | String AI |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 3.9 (9 ratings) | 4.3 (6 ratings) — better |
| Positive reviews | 60.0% of reviews | 83.3% of reviews — better |
| Number of ratings | 9 — better | 6 |
| Update frequency | Every 4 months | Every 3 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 | 132 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$13.991 Month
- Casual$26.991 Month
- Standard$39.991 Month
Show 1 moreShow fewer
- 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?
Other comparisons















