Decoder Ring
$0
Encode, decode, share. The whole cipher with one fixed cipher number and one dictionary.
- Encode and decode any text
- Default dictionary, default cipher number
- Light and dark mode
- Banner ad on the main screen
Pricing
Tiers, not a wall.
Free to download. Pay once for the upgrades that fit how you use it; subscribe only for the features that keep getting smarter over time.
Plus
$2.99 once
Custom cipher number and multiple dictionaries. No ads.
- Set any cipher number from 1 to 10,000
- Switch dictionaries (incl. British English)
- No ads on the main screen
- Permanent unlock — pay once, keep forever
Contacts
$4.99 once
Plus, plus saved contacts. One tap per friend or group chat.
- Everything in Plus
- Save up to ten contacts or groups
- Per-contact cipher number and dictionary
- One-tap translate for a specific person
- Per-friend routing for Messages auto-decode
Auto-Shift
$9.99 / year
A living cipher that rotates daily. Includes a 7-day free trial.
- Everything in Contacts
- Per-contact cipher number bumps daily, automatically
- Live "today's effective cipher number" preview
- Apple Watch companion app — change the dial from your wrist
- 7-day free trial
Polyglot
$14.99 / year
Translate the shifted word into another language before sending. Includes a 7-day free trial.
- Everything in Auto-Shift
- Spanish, French, and German at launch
- Layered on top of any other tier's cipher number
- 7-day free trial
Want a taste of Plus?
Free users can watch a short ad inside the app to unlock Plus features for four hours. No purchase, no commitment.
Available after launch — coming with the first ad-supported build.
At a glance
What you get at each tier.
| Feature | Free | Plus | Contacts | Auto-Shift | Polyglot |
|---|---|---|---|---|---|
| Encode & decode | ✓ | ✓ | ✓ | ✓ | ✓ |
| Custom cipher number (1 – 10,000) | — | ✓ | ✓ | ✓ | ✓ |
| Multiple dictionaries | — | ✓ | ✓ | ✓ | ✓ |
| No ads | — | ✓ | ✓ | ✓ | ✓ |
| Messages auto-decode | ✓ | ✓ | ✓ | ✓ | ✓ |
| Saved contacts (up to 10) | — | — | ✓ | ✓ | ✓ |
| Per-friend routing for auto-decode | — | — | ✓ | ✓ | ✓ |
| Daily auto-shifting cipher | — | — | — | ✓ | ✓ |
| Apple Watch companion app | — | — | — | ✓ | ✓ |
| Language layer (Polyglot) | — | — | — | — | ✓ |
| Price | $0 | $2.99 once | $4.99 once | $9.99 / yr | $14.99 / yr |
How billing works
One-time unlocks (Plus, Contacts). Pay once via the App Store, keep forever. They're attached to your Apple ID — install on a new phone, hit Restore Purchases, you're back where you were.
Subscriptions (Auto-Shift, Polyglot). Auto-renew yearly unless cancelled. Both come with a 7-day free trial — try it for a week, decide before the first charge. You can cancel any time in Settings → Apple ID → Subscriptions.
No accounts, ever. All purchases ride your Apple ID. We never ask for an email, password, or payment method directly. We can't see your billing details and we never will.