Comparison

FoundKey vs SunScore

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

Head to head
About

FoundKey

Features
Read full description

FoundKey is a hands-on cryptography toolkit and learning app. Run real cryptographic operations, see exactly how ciphers transform your text, build multi-step cipher recipes, and trade encrypted messages and code-cracking challenges with friends - all in a beautiful, fast, fully offline app. WORKBENCH - 45+ OPERATIONS • Encode & decode: Base64, Hex, Binary, URL, Morse code (with audio playback), and more • Classical ciphers: Caesar, Vigenère, Atbash, Rail Fence, Playfair, Enigma, and friends • Modern crypto: AES, ChaCha20, Blowfish, and other symmetric ciphers • Hashing & key derivation: SHA-256 and the SHA-2 family, MD5, BCrypt, Argon2 • Utilities: frequency analysis, text tools, random keys, and more SEE HOW CIPHERS ACTUALLY WORK Tap "Explain" and watch your own text get transformed step by step - letter shifts, key alignment, rail patterns. It's the fastest way to truly understand a cipher: not a diagram from a textbook, but your message, traced live. CIPHER LAB - BUILD YOUR OWN ENCRYPTION Chain operations into reusable recipes: Vigenère into Base64 into reversed text — whatever you can dream up. Save, color-tag, and share recipes, or publish them as "black box" puzzles where friends must figure out the password. LEARN - A CRYPTOGRAPHY LIBRARY IN YOUR POCKET Illustrated chapters take you from ancient ciphers to modern encryption and hashing, with progress tracking as you read, test, and master each topic. MESSAGES - REAL ENCRYPTED NOTES Compose messages encrypted with real algorithms and pass them to friends by QR code, AirDrop, or link. They decrypt in the recipient's app with the key you share. No accounts, no servers — the message travels inside the code itself. CHALLENGES - CRACK THE CODE Solve built-in puzzles across difficulty tiers, race the clock, use hints sparingly - or craft your own challenges and dare your friends. PRIVATE BY DESIGN • No account, no ads, no analytics, no tracking • Everything stays on your device; works fully offline • Sensitive clipboard copies expire automatically and never sync to other devices • History auto-deletes on your schedule POWER-USER FRIENDLY • Siri Shortcuts for Base64, Hex, and SHA-256 • Spotlight search for operations, articles, and recipes • Deep links and .cwb files for sharing • Beautiful native design for iPhone and iPad, light and dark FREE VS PREMIUM Free forever: all 45+ operations, 5 cipher recipes, the first Learn chapters, starter challenge packs, and unlimited message exchange. One single purchase — no subscription — unlocks unlimited recipes, all 8 Learn chapters, every challenge pack, and early access to new features. Whether you're a puzzle lover, a student, a developer who needs a quick Base64 or hash, or just someone who thinks Enigma machines are cool — Crypto Workbench turns cryptography from a black box into a playground. Download it and crack your first code in the next five minutes. Terms of use: https://gitlab.com/seisembay/foundry-docs/-/blob/main/terms-of-use.md

About

SunScore

Transform any sheet music into an interactive learning experience. Connect your piano, play along, and receive instant feedback. Upload sheet music via photo, PDF, or digital score to practice exercises, explore a song library, and test your skills.

Highlights
  • Upload any sheet music (photo, PDF, MusicXML)
  • AI transcription of sheet music
  • Interactive piano practice with feedback
  • Isolate hands and loop sections
  • Exercises for piano mastery
  • Library of free songs
  • Skill testing and progress tracking
Features
Read full description

SunScore is an app to make your piano and music learning journey easier than ever. You can upload any sheet music, and SunScore will transform it into an interactive experience where you can connect your piano, play along, get feedback, isolate hands, loop sections, and much more. CAN I LEARN ANY SHEET MUSIC? Yes! That is SunScore's biggest advantage: you can upload any sheet music. Take a picture of the sheet in front of you, use a PDF, or upload a digital score like MusicXML. When uploading images or PDFs, our powerful AI model transcribes them into a digital score (MusicXML). This digital score is what SunScore uses to create a stress-free and interactive way to learn sheet music. It will make you read and memorize music faster while enjoying the process. You can also download the digital score as MusicXML or MIDI and use it elsewhere. Note: Uploading your own scores requires an active SunScore subscription. WHAT ELSE CAN SUNSCORE DO? SunScore is the definitive tool for learning piano and music: - Exercises to master piano: Practice the exercises needed to develop speed, finger independence, control, and confidence on the piano. - Library of songs: SunScore includes a free library of songs for every style and skill level. - Test your skills: Our test mode measures how well you play and gives you a score so you can track your progress visually. - Edit any sheet music: Make corrections, annotate, add new measures... Are you ready to boost your piano journey? Join our community today! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sunscore.so/legal/privacy

Screenshots

FoundKey4 screens
SunScore4 screens

Verdict

The call

FoundKey and SunScore are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both are free to download. FoundKey sells 1 one-off in-app purchase and SunScore sells 6 in-app purchases, starting at $11.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
FoundKey versus SunScore: the parameters behind the verdict, then further details
ParameterFoundKeySunScore
PriceFreeFree
Rating—3.6 (20 ratings) — better
Positive reviews—16.7% of reviews
Number of ratings—20 — better
Update frequency—Every 3 days
AdsNoNo
In-app purchasesYesYes
Monetization—Subscription
DevicesiPhoneiPhone, iPad — better
Requires iOS17.616.0 — better
Further details — not scored
Size12 MB341 MB
Age rating12+4+
DeveloperIslam SeisembayADRIAN GONZALEZ CARPINTERO

In-app purchases

1 purchases

FoundKey

One-time1
  • FoundKey Premium$4.99
6 purchases

SunScore

Subscriptions6
  • Standard Monthly$11.991 Month
  • Pro Monthly$19.991 Month
  • Standard Yearly3 Days trial$47.991 Year
Show 3 more
  • Pro Yearly3 Days trial$77.991 Year
  • Standard Yearly3 Days trial$95.991 Year
  • Pro Yearly3 Days trial$155.991 Year

Questions

Is FoundKey free?
FoundKey is free to download, with in-app purchases available.
Is SunScore free?
SunScore is free to download, with in-app purchases available.
Do FoundKey or SunScore have ads?
Neither FoundKey nor SunScore shows ads.

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