PepStash vs ProStack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PepStash
Manage your peptide inventory, track costs, and log doses with this personal companion app. It helps calculate concentrations, suggests ideal water amounts, and syncs data across household devices via iCloud for seamless sharing and reminders.
- Peptide inventory management
- Cost per milligram calculation
- Reconstitution concentration calculator
- Dose logging with vial tracking
- Household data syncing via iCloud
- Dose reminders and alerts
- Purity test result linking
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PepStash is your personal peptide management companion. Track inventory from purchase through reconstitution to dose logging — synced across your household via iCloud. INVENTORY & KITS Add individual vials or purchase kits. See quantities and milligram breakdowns at a glance. Track what you paid per kit and PepStash calculates cost per milligram. Add third-party purity test results with a link to the report. Stock rotation sorting ensures oldest kits are used first. PRICE ANALYTICS Compare cost per milligram across suppliers. Toggle between labeled and tested mg values to see what you actually received versus what you paid for. RECONSTITUTION Enter your bacteriostatic water amount and get your concentration instantly. The built-in calculator suggests ideal water amounts based on your expected dose, highlighting options that land on clean syringe units. DOSE LOGGING Log every dose with peptide name, amount, unit (mg, mcg, IU), and source vial. Active vials automatically track remaining milligrams so you always know what's left. SHARE WITH YOUR PARTNER Invite your spouse or partner via CloudKit sharing. Both of you can manage inventory, reconstitute vials, and log doses from your own devices. Each person's doses are tagged separately. DASHBOARD & REMINDERS Your daily command center shows today's doses, active vial status with color-coded depletion gauges, low inventory alerts, and quick-action buttons. Set recurring dose schedules with reminders so you never miss a dose day. PRIVACY FIRST All data stays on your device and your private iCloud account. No servers, no accounts, no tracking.
ProStack
Effortlessly calculate peptide dosages and track your cycles with instant syringe unit calculations. Log your progress, set reminders, and access a reference library for safe and effective use.
- Instant syringe unit calculation
- Cycle tracking with calendar view
- Dose reminders with auto-pause
- Progress tracking (body composition, photos)
- Peptide reference library
- Nasal spray calculator
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Stop doing peptide math in your head. ProStack Guide calculates exact syringe draws instantly, tracks every cycle, and reminds you when it is time to dose. • Quick Calculator — pick a peptide and get an instant, accurate syringe unit calculation • Cycle Tracking — log active, paused, and completed protocols with a visual monthly and weekly calendar • Dose Reminders — schedule-aware notifications that pause automatically when you pause a cycle • Progress Tracking — log body composition and photos over time • Peptide Library — reference guides for reconstitution, storage, and handling • Nasal Spray Calculator — dedicated dosing math for intranasal protocols ProStack Guide is a tracking and calculation tool for research and personal record-keeping purposes only. It is not medical advice and does not diagnose, treat, or prescribe. Always consult a qualified healthcare professional before beginning or changing any protocol. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
PepStash and ProStack are too close to call on the numbers: across 9 compared parameters — price, rating, ratings volume and update cadence 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for PepStash against 5.0 for ProStack. Both are backed by a comparable volume of ratings — 2 and 3 respectively.
PepStash ships an update every 3 days, ProStack every 6 days. The most recent releases landed on September 24, 2026 and September 29, 2026 respectively.
| Parameter | PepStash | ProStack |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (3 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 | 3 — better |
| Update frequency | Every 3 days — better | Every 6 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 3 MB | 65 MB |
| Age rating | 4+ | 17+ |
| Developer | Aaron Voges | JESSIE GRACE CHRISTIE |
Customer experience
PepStash
ProStack
In-app purchases
PepStash
No in-app purchases
ProStack
No in-app purchases





