Comp 2.0 vs PeptideCalc Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Comp 2.0
Enhance your 1998.5-2002 24V Cummins diesel engine's performance with on-the-fly adjustments. Fine-tune fueling, accelerator pedal response, and timing for significant power gains.
- On-the-fly adjustability via Bluetooth
- Fine-tune low boost fueling
- Adjust fuel delivery based on pedal position
- Optimize timing for power curves
- Gains of 40-150 HP and 150-380 TQ
- Supports aftermarket injectors and turbos
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The COMP box has dominated the 1998.5-2002 24V Cummins market for two decades and put Edge Products on the map in the early diesel performance era. With so many VP44 trucks still on the road, we’ve revamped our COMP to offer dominating performance gains with the industry’s latest technology. Our all-new Bluetooth wireless switch offers on-the-fly adjustability giving complete control over the driving experience. The mobile App offers fine tuning adjustment for low boost fueling, fuel delivery based on Accelerator Pedal Position, and timing to dial in your power curve for aftermarket injectors and larger turbo combinations. Breathing new life into your 5.9L Cummins, COMP offers gains from 40-150 HP, 150-380 TQ, even more RPM, and power available for heavily modified applications.
PeptideCalc Pro
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The essential calculator for peptide reconstitution and dosing. PeptideCalc Pro is a comprehensive toolkit designed for anyone who needs precise peptide calculations. Whether you're calculating reconstitution ratios, determining syringe units for a specific dose, or tracking multiple vials, this app has you covered. DOSAGE CALCULATOR Enter your vial concentration and desired dose to instantly calculate the exact syringe units to draw. Supports both mg and mcg inputs with automatic conversion. RECONSTITUTION CALCULATOR Determine how much bacteriostatic water to add to achieve your target concentration. See results for multiple water volumes at once. VIAL TRACKER Keep track of all your reconstituted vials in one place: • Monitor remaining amounts and expiration dates • Log doses with one tap • Get alerts when vials are running low or expiring soon • Never waste a vial by losing track of its age DOSING SCHEDULE Create custom dosing schedules with flexible frequency settings. Link schedules to tracked vials for automatic inventory updates. PEPTIDE LIBRARY Reference guide with 20+ peptides including typical dose ranges, common vial sizes, and storage information. Add your own custom peptides. ADDITIONAL FEATURES • Unit converter (mg/mcg, mL/units) • Calculation history • Export data as PDF or text • Clean, intuitive interface • No account required • Works offline
Screenshots
Verdict
The clearest difference is price: Comp 2.0 at Free against PeptideCalc Pro's $4.99. On ads, in-app purchases, 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
Comp 2.0 is free to download; PeptideCalc Pro costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Comp 2.0 | PeptideCalc Pro |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 3.8 (6 ratings) — better | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 11 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 139 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Holley Performance Products | Aaron Voges |
In-app purchases
Comp 2.0
No in-app purchases
PeptideCalc Pro
No in-app purchases









