DoserX vs Protokit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DoserX
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The DoserX application is designed to control and configure Aqua-Trend's SAMUDRA series multifunctional aquarium dispensers. The application works with the five-channel DoserX dispenser, and the three-channel DoserXs dispenser. DoserX is the sum of experience gained over 15 years by the first Polish manufacturer of aquarium dispensing equipment. The knowledge we gained, and the feedback from our customers, allowed us to build an aquarium dispenser that will meet the expectations of even the most demanding aquarists. This application will allow you to take advantage of all the functions that DoserX offers and will also help you in the daily care of your aquarium. Below you will find a description of some of the functions DoserX offers - Control operation of five (or three) precision peristaltic pumps: Schedule-based operation, manual switching of peristaltic pumps, rapid release of programmed doses, release of control doses. - Scheduler: An elaborate diagram with which you can easily program the dose release of each of the five ( or three) pumps. Thoughtful options for copying and transferring settings make it take just a few minutes to program the operation of all pumps. - Calibration: With the peristaltic pumps' calibration feature, you'll be sure that each released dose will contain the exact volume of liquid you programmed. - Calculation of consumption of pumping hoses and peristaltic heads. - Monitoring of fluid consumption: A function thanks to which you will always know when to refill the bottles with dispensed fluids. - Magnetic stirrer: Thanks to the operation of the magnetic stirrer you will be sure that suspensions and liquids containing solid particles (such as foods) will be dosed into the aquarium in the right way. - Temperature measurement: The temperature measured by the device is presented in the form of an easy-to-read graph containing historical measurements. - Temperature alarm: With DoserX, you will never miss a harmful rise, or drop in temperature. - Automatic refill with overrun alarm and operating time limit: A function that maintains a constant, safe level of water in the aquarium, in case of problems an appropriate acoustic alarm will sound and the topper will be turned off. - Aquarium maintenance logbook: With an extensive logbook, you will easily archive all activities, measurements and events in your aquarium. All entered data is presented in an easy-to-read graph that shows what changes have occurred in your aquarium over time. The application uses the BLE (Bluetooth Low Energy) communication standard in its operation.
Protokit
Log and track peptide cycles, doses, and vials with a powerful, clean interface. Features include a reconstitution calculator, smart scheduling with reminders, and detailed statistics on adherence and progress. Integrates with BodyMetrics for correlating lab results with your protocol.
- Track peptides, blends, pre-mixed vials, and tablets
- Reconstitution calculator for accurate dosing
- Smart scheduling with custom reminders
- Detailed statistics on adherence and progress
- Injection site logging with rotation reminders
- BodyMetrics integration for lab data correlation
- Customizable themes and views
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Protokit — Peptide Tracker & Log Formerly Pep Tracker. Same app, same data, new name. Protokit is a clean, powerful peptide tracker for logging your protocol — cycles, doses, injections and vials, all in one place. Built for people who like to keep track of the details. TRACK FOUR KINDS OF ENTRY - Peptides you reconstitute yourself — vial size and BAC water - Blends — several peptides in one vial, tracked as one - Pre-mixed vials that arrive ready in solution - Tablets — strength per tablet and pack size Each type gets the right fields and calculations. PEPTIDE BLENDS - Enter each component's mg and the shared BAC water - One schedule, one reminder, one injection for the whole blend PEPTIDE MANAGEMENT - Track everything in one place; pause and resume anytime - Remaining doses, injection volume and vial level at a glance - Vial bar shifts color as it runs low, with a warning on your last vial RECONSTITUTION CALCULATOR - Enter vial size and BAC water, dose in mg or mcg - Instantly see injection volume, units and doses per vial - Work out how many vials a whole cycle needs SMART SCHEDULING - Daily, weekly or fully custom schedules - Start a cycle on a future date — set the first dose and it begins then - Morning and evening reminders with the doses due - Private mode: hide names and doses from your lock screen - Flags the day a vial or pack won't stretch far enough CYCLE TRACKING - Set cycle length and rest periods per entry - Progress and day count on the card - Get notified when a cycle or rest period ends STATISTICS - Adherence, doses taken and missed by week, month or year - Dose trends and a per-peptide breakdown - Cycle progress with its own adherence and streak BODY & LABS (BodyMetrics integration) - Import your measurements and bloodwork from BodyMetrics - Correlate your body and lab markers against cycles and doses - See how your body responds over each cycle INJECTION SITE LOG - Log each injection on an anatomical body map - See how recently each area was used, with rotation reminders PROTOCOL VIEW - A clean, shareable overview of your whole protocol - Cards, Compact or Table view, with adjustable text size VITAMINS & MINERALS - A simple daily check-off for your supplements - Weekly overview of days taken and missed (optional — hide it in Settings) ESSENTIAL OR ADVANCED - Essential shows your daily doses and units only - Advanced unlocks stats, cycles, vial stock and Protocol view - Switch anytime — same data, same account YOUR STYLE, YOUR CHOICE - 16 themes across three families - Cyber: Matrix, Cyber, Neon, Amber - Signature: Onyx, Aurora, Mono, Volt - Classic: light or dark with Teal, Indigo, Berry or Ochre CLOUD SYNC - Your data syncs safely across devices with email sign-in PROTOKIT PRO Unlock unlimited peptides with a one-time purchase or an auto-renewing monthly subscription. Payment is charged to your Apple ID at confirmation of purchase. The subscription renews automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel anytime in your Apple ID settings. Protokit — the peptide tracker built for the details. Protokit is a personal tracking tool for organizing your own records. It does not provide medical advice, dosing recommendations, or instructions of any kind. Always consult a qualified healthcare professional before using any substance. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://almstedt.studio/protokit/privacy/
Screenshots
Verdict
The clearest difference is in-app purchases: DoserX at none against Protokit's 1. DoserX also leads on iOS requirement (13.0 vs 15.1). Protokit's advantage is update cadence (every 6 days vs every 2 months). On price, 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
Both are free to download. Protokit sells 1 one-off in-app purchase. DoserX asks for nothing beyond the download.
DoserX ships an update every 2 months, Protokit every 6 days. The most recent releases landed on September 23, 2026 and September 19, 2026 respectively.
| Parameter | DoserX | Protokit |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 38 MB | 50 MB |
| Age rating | 4+ | 17+ |
| Developer | Aqua-Trend | Niklas Almstedt |
In-app purchases
DoserX
No in-app purchases
Protokit
- Pep Tracker Pro – Lifetime$24.99









