PDF Flatten vs Ringaroo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDF Flatten
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Turn fillable PDF forms into static, non-editable PDFs fully offline. PDF Flatten converts interactive PDF forms (AcroForms) into static documents that can no longer be edited. Perfect for official forms, contracts, and secure document submissions. No subscriptions. No accounts. No uploads. Everything is processed directly on your device. Why use PDF Flatten? • Convert fillable PDF forms into static PDFs • Remove interactive fields permanently • Works offline and fully private • No watermark • Fast native performance • Simple and clean interface Perfect for: • Contracts and agreements • Business forms • School documents • Applications and paperwork • Any fillable PDF form How it works: 1. Select a fillable PDF 2. Tap Flatten 3. Save or share your static PDF That is it. Your documents never leave your phone. Simple. Secure. Offline.
Ringaroo
Easily create custom ringtones from any song or sound on your device. Trim audio with precise waveform editing, add fades, and normalize volume. Save presets for quick re-exports. A free version allows one daily ringtone, with a Pro subscription for unlimited creations.
- Custom ringtone creation
- Audio import from various sources
- Precise waveform trimming
- Fade in/out effects
- Volume normalization
- Save and reuse presets
- Offline operation
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Ringaroo turns any song, voice memo, or sound into a custom ringtone — right on your Phone. Import audio from Files, AirDrop, or any app (MP3, AAC, M4A, WAV, AIFF, FLAC, CAF), trim the perfect clip on a touch waveform, then export a ready-to-use .m4r and follow a simple in-app guide to set it in the Files app. MAKE IT YOURS • Visual waveform trimmer with drag handles and pinch-to-zoom precision • Live 30-second counter so every clip is ringtone-ready • Loop preview — hear exactly how it will ring • Fade in/out, one-tap volume normalize, and manual gain • Recents and reusable Presets to re-export in seconds INCLUDED FREE • The full editor — import, trim, fades, normalize, gain, and loop preview • Save presets and revisit your recents anytime • Create one new ringtone every day, free RINGAROO PRO • Unlimited ringtones — no daily limit and no waiting • Everything in Free, with no caps • Available as a monthly subscription or a one-time lifetime purchase PRIVATE BY DESIGN Everything runs on-device. No account, no sign-up, no uploads — and it works fully offline. Ringaroo collects zero data. Designed for iPhone and iPad. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Ringaroo at Free against PDF Flatten's $0.99. PDF Flatten's advantage is in-app purchases (none vs 2) and iOS requirement (15.1 vs 26.2). On 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
Ringaroo is free to download; PDF Flatten costs $0.99 up front. Ringaroo sells 2 in-app purchases, starting at $3.99 per month. PDF Flatten asks for nothing beyond the download.
| Parameter | PDF Flatten | Ringaroo |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 4.3 (3 ratings) — better |
| Number of ratings | — | 3 — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 26.2 |
| Further details — not scored | ||
| Size | 29 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | StudyBridge LLC | Life Utility Apps, LLC |
In-app purchases
PDF Flatten
No in-app purchases
Ringaroo
- Monthly$3.991 Month
- Lifetime Access$14.99
