DebtSyn vs IOU
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DebtSyn
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Money between friends gets awkward. DebtSyn keeps it clear. Record a debt in seconds — the other person confirms it, so there is never an argument about who owes what. When it is paid, both sides confirm again. Done. Transparent history forever. WHY DEBTSYN • Both-sides confirmation — every debt and every payment is agreed by both people • Friendly reminders (nudges) — ping a friend politely when a debt is due • Trust score — everyone builds a 0–100 reliability score that friends can see • Group expenses — trips and dinners split Splitwise-style, settled with the fewest transfers • Private personal ledger — quick IOU notes stored only on your device, no account needed for the other person • Reports — monthly activity, balance breakdown and top partners at a glance • Pay via VietQR (Vietnam) — generate a bank-transfer QR for the exact amount; money goes bank-to-bank, never through the app SIMPLE & SAFE • Sign in with Apple or Google, or start instantly without an account • Debts sync across devices; your private ledger never leaves your phone • No ads. No tracking. Core features are free — Premium only removes usage limits DebtSyn Premium (optional subscription): unlimited friends, groups and ledger entries, more nudges and photos, watermark-free receipts. Monthly, quarterly or yearly; cancel anytime in your Apple account settings. Terms of Use: https://sinta.ltd/terms-of-service Privacy Policy: https://sinta.ltd/privacy-policy
IOU
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IOU: Debt Tracker keeps personal debts and shared expenses out of your head. Record money you lent or borrowed, choose the amount, currency, and due date, and see the current balance for every person. • Add people and choose friendly avatars • Record money lent and borrowed • Use any currency • Keep an eye on due dates and reminders • Review transaction history and total balances • Mark a debt as settled when money is returned Your debt records stay on your iPhone. No account is required. Made for simple IOUs between friends, family, and coworkers, without spreadsheets or complicated finance jargon. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
DebtSyn and IOU 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
Both are free to download. DebtSyn sells 3 in-app purchases, starting at $2.99 per month and IOU sells 4 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
| Parameter | DebtSyn | IOU |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 days | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 30 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | SINTA Technology | Ivan Dotsenko |
In-app purchases
DebtSyn
- Premium Monthly$2.991 Month
- Premium Quarterly$7.993 Months
- Premium Yearly$19.991 Year
IOU
- Pro Weekly$1.997 Days
- IOU Pro Monthly7 Days trial$3.991 Month
- IOU Pro Yearly$14.991 Year
- Pro Lifetime$24.99









