Comparison

SkinStack vs Convertor

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

Head to head
About

SkinStack

Features
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Stop guessing which products work together. SkinStack builds your perfect skincare routine and warns you about ingredient conflicts before they cause breakouts. BUILD SMART ROUTINES - Add your skincare products with ingredients - Get automatically sorted AM/PM routines based on texture and category - Know the correct layering order: water-based first, heavy creams last DETECT INGREDIENT CONFLICTS - Retinol + AHA = irritation? We'll warn you - Vitamin C + Niacinamide = safe? We'll confirm it - 20+ built-in conflict rules covering common ingredients - Avoid-level (never mix) and caution-level (use carefully) warnings - Synergistic pair detection (ingredients that work better together) SCAN INGREDIENT LABELS (PRO) - Point your camera at any product label - Vision OCR automatically reads and parses ingredients - Add scanned ingredients to your products instantly WAIT-TIME TIMER (PRO) - Know exactly how long to wait between products - Different wait times for different textures (60s for serums, 5min for oils) - Push notification when it's time for the next step SKIN JOURNAL (PRO) - Track your skin condition daily with emoji ratings - Log concerns like breakouts, dryness, redness - See your skin improvement trend over time - Connect products used to skin condition changes ONE-TIME PURCHASE, NO SUBSCRIPTION - Free: 3 products, basic conflict detection - Pro: $4.99 one-time — unlimited products, scanner, timer, journal - No recurring charges. Ever. WHY SKINSTACK? - 100% offline — your data stays on your device - No accounts, no tracking, no analytics - Built by skincare enthusiasts who got tired of guessing - One-time purchase beats monthly subscriptions Your skincare routine should work for you, not against you. Download SkinStack and start building smarter routines today.

About

Convertor

Read full description

Convertor is the all-in-one video, audio and voice studio for iPhone, iPad and Mac — turn MP4 into MP3, transcribe any video, isolate a voice, make ringtones, master a podcast, and share vertical clips in seconds. Everything runs on your device. No account. No uploads. No tracking. No ads. WHAT’S NEW IN 2.5 - Voice Isolation: FaceTime-grade denoise for interviews, calls and voice memos - Auto-Master: one-tap broadcast mastering chain — level, EQ, limit - Studio Rack: compressor, de-esser, gate, reverb, EQ — a full effects rack - Vocal Separator: split vocals from instrumental for karaoke prep - Live Transcribe: rolling captions for stages, meetings and lectures - Screen Record + mic: capture tutorials, gameplay, video calls - LUFS loudness: normalise for YouTube, Spotify, TV or podcasts - 9:16 vertical export: crop and burn subtitles for social clips - Smart Trim: automatically cut silence and filler words (um, uh) - Voice-over overlay: narrate on top of existing music - Mac Catalyst: Convertor now runs natively on your Mac - 30+ new audio effects: multiband compressor, sidechain ducker, tape saturator, chorus, flanger, pitch shift, reverse, vocoder and more WHAT YOU CAN DO - Convert MP4/MOV/MKV/WebM/M4V/HEVC to MP3, M4A, WAV, ALAC, AAC or ringtone - Compress video to MP4/MOV/M4V with HEVC preset - Make animated GIFs from any clip - Text-to-speech with system voices - Meeting mode with automatic chapter markers - AI voice cleanup, EQ presets, karaoke maker - Auto-trim silence, split by duration or chapters - Cover art from Photos, batch tag editor - Live waveform, playlists, bookmarks, iCloud sync - On-device transcription with SRT/VTT export WHY CONVERTOR - 100% on-device — no uploads, no accounts, no ads - Works offline, everywhere - Studio quality up to 320 kbps - 3-day free trial, cancel any time ——— Convertor Pro subscription (optional): - 3-day free trial, then Weekly $3.99 / Monthly $8.99 / Yearly $34.99 Payment is charged to your Apple ID at purchase confirmation. Subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel in Settings > Apple ID > Subscriptions. Terms of Use (EULA): https://birsoftware.com/terms.html Privacy Policy: https://birsoftware.com/privacy.html

Screenshots

SkinStack4 screens
Convertor4 screens

Verdict

The call

The clearest difference is in-app purchases: Convertor at none against SkinStack's 1. On price, ads, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SkinStack sells 1 one-off in-app purchase. Convertor asks for nothing beyond the download.

Scorecard1 real difference · 5 level
SkinStack versus Convertor: the parameters behind the verdict, then further details
ParameterSkinStackConvertor
PriceFreeFree
Update frequency—Every 4 days
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS1717.0
Further details — not scored
Size1 MB21 MB
Age rating9+4+
Developer贺 周Birkan Aksoy

In-app purchases

1 purchases

SkinStack

One-time1
  • SkinStack Pro$4.99
None

Convertor

No in-app purchases

Questions

Is SkinStack free?
SkinStack is free to download, with in-app purchases available.
Is Convertor free?
Convertor is free to download, with no in-app purchases.
Do SkinStack or Convertor have ads?
Neither SkinStack nor Convertor shows ads.

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