Comparison

Milligram vs Caliper

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

Head to head
About

Milligram

Optimize your health and performance with science-backed data. Track peptide levels, analyze bloodwork, and monitor progress with intelligent insights. Get personalized feedback on your protocol and health metrics.

Highlights
  • Intelligent protocol analysis
  • Compound level tracking
  • Bloodwork analysis and biomarker flagging
  • Comprehensive compound library
  • Progress scans for body composition
  • Stack analytics and interaction flagging
  • Journaling for health metrics
  • Reconstitution calculator
Features
Read full description

Whether you're optimizing for fat loss, muscle gain, longevity, recovery or anti aging, Milligram is for people who want to take back control of their health protocols with science-backed confidence. Every other tracker gives you a tidier place to write down what you already did. Milligram models what is actually in your system right now. Every dose charted against every half-life. Everything in the stack with info and the database covering over 3,581 references total. Bloodwork read against what you are actually running. And an AI assistant that answers from your real-time numbers, read against a database made specifically for your protocol, not everyday questions. FEATURES Your Protocol: Everything you run, on one screen. Each compound with its own schedule, dose, vial and supply tracked, and the whole protocol read as one picture rather than being scattered across different notes, files and spreadsheets. Dose tracking: Log every dose, whether that's an injectable or an oral supplement - Milligram works with every compound and every dosing route. Reminders arrive on the protocol's schedule and know which compound, which dose and which injection site. Milligram Intelligence: An assistant that already has your stack, your doses, your bloodwork and your Apple Health data loaded. Ask "which doses did I miss this month", "how is my weight tracking against my retatrutide cycle", or "did my IGF-1 move on tesamorelin", and get an answer from your own numbers. Level Buildup: See your compound levels build from each trough to peak. Every dose is charted against the published half-life of your compound, so you know exactly when you've reached the right zone at the right titration, how each dose is keeping you there, and how much a missed dose can actually move the needle. Bloodwork: Upload a PDF or a photo of your labs. Every biomarker is extracted and out-of-range values flagged, then kept where they can be read against the compounds that might be moving them. Compound Library: 202 compounds with mechanisms, dose ranges, half-lives, expected timelines and side-effect profiles, each referenced to clinical sources. Retatrutide, tirzepatide and semaglutide. Testosterone esters, Masteron, Anavar. Tesamorelin, BPC-157, GHK-Cu, MK-677, Ipamorelin and CJC-1295. Creatine, Omega-3 Fish Oil, Magnesium, Zinc, Vitamin D3, and more. AI calorie and nutrition tracking: Scan any meal with your camera. Snap a photo, scan a barcode, or scan a nutrition label and Milligram extracts calories, protein, carbs and fat instantly. Track every meal against your daily targets with a clean macro breakdown. Apple Health: Two-way sync for sleep, HRV, vitals, activity, weight and body composition, so protocol data and health data sit in the same timeline. SUBSCRIPTION AND TERMS Milligram Pro is accessible via an auto-renewing subscription. You may switch off auto-renew in your Apple ID Account Settings. Purchases of subscriptions will be charged using your Apple ID upon confirmation of purchase. Subscriptions renew on a monthly or yearly basis, unless canceled at least 24 hours before the end of the current period. If canceled, subscriptions remain valid until the end of the current period, and any unused portions are not valid for a refund. By signing in with Apple or by purchasing a subscription, you affirm your understanding of the following: Terms of Service: https://milligram.health/terms Privacy Policy: https://milligram.health/privacy Milligram is not a medical device and is not intended to diagnose, treat, cure, monitor, or prevent medical conditions or illnesses. Always consult your physician first. All information provided is for general informational purposes only.

About

Caliper

Precisely track GLP-1, peptide, and compound protocols with one-tap logging and visual level curves. Monitor doses, weight, side effects, and progress privately on your device. Includes a reconstitution calculator and provider export.

Highlights
  • GLP-1 & peptide tracking
  • One-tap dose logging
  • Visual compound level curves
  • Weight & BMI trends
  • Side effect logging
  • Private progress photos
  • Reconstitution calculator
Features
Read full description

Caliper is the precise, private way to track your GLP-1, peptide, and compound protocol — every dose, every level, every trend in one place. Log a dose in one tap. Watch what's active in your body build and clear on a clean levels curve. Keep an honest, fully editable record — with gentle reminders so you never lose the thread. WHY CALIPER • See what's active in your body — a curve models each compound across the week from its half-life, so you can watch it build and clear at a glance • One-tap logging — dose, time, and injection-site rotation come ready from your protocol; adjust anything, or backfill a past dose • Reminders that respect you — dose nudges and a weekly check-in, never nagging, never shame TRACK WHAT MATTERS • Doses & schedules — pens, vials, oral, and multi-ingredient blends • Weight & BMI — trends that read clearly at a glance • Side effects — log symptoms and severity over time • Progress photos — private, stored on your device, never uploaded • Injection sites — rotation history and a site heatmap • Supplies — vials, doses remaining, expiry, and runway TOOLS BUILT IN • Reconstitution calculator — the exact units to draw for any vial, solved once • History — a full ledger, calendar, and per-compound detail • Insights — patterns and trends from your own data • Provider export — share a clean summary as a PDF • Journey Card — mark a milestone and share it, only if you want PRIVATE BY DESIGN Your data lives on your device. Progress photos never leave it. Sign in to securely back up your record and move to a new phone — nothing more, nothing sold. CALM, FAST, YOURS A precise, uncluttered interface with full Light and Dark mode. No ads. No feed. No noise. Caliper organizes and describes the data you enter. It does not provide medical advice and does not recommend a dose, schedule, or outcome. Always follow the guidance of your healthcare provider. Terms of Use: https://getcaliper.app/terms

Screenshots

Milligram4 screens
Caliper4 screens

Verdict

The call

The clearest difference is review sentiment: Caliper at 100% against Milligram's 59%. Caliper also leads on in-app purchases (none vs 4) and rating (5.0 vs 4.7). Milligram's advantage is ratings volume (419 vs 1) and update cadence (every 5 days vs every 10 days). 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. Milligram sells 3 in-app purchases, starting at $17.49 per month. Caliper asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Caliper holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Milligram has 419 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 59% of Milligram's written reviews are positive against 100% of Caliper's.

UpkeepUpdate frequency

Milligram ships an update every 5 days, Caliper every 10 days. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

Scorecard6 real differences · 4 level
Milligram versus Caliper: the parameters behind the verdict, then further details
ParameterMilligramCaliper
PriceFreeFree
Rating4.7 (419 ratings)5.0 (1 ratings) — better
Positive reviews59.4% of reviews100.0% of reviews — better
Number of ratings419 — better1
Update frequencyEvery 5 days — betterEvery 10 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS17.016.4 — better
Further details — not scored
Size171 MB43 MB
Age rating12+17+
DeveloperMilligram Health Pty LtdIKIGAI SOFTWARE DEVELOPMENT LLC

Customer experience

Milligram

All ratings419 ratings
Positive92.4%
Neutral3.3%
Negative4.3%
Written reviews64 reviews
Positive59.4%
Neutral1.6%
Negative39.1%

Caliper

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Milligram

Subscriptions3
  • Milligram Pro2 variants$17.491 Month
  • Milligram Pro3 Days trial$49.991 Year
  • Milligram Pro3 Days trial$69.991 Year
None

Caliper

No in-app purchases

Questions

Is Milligram free?
Milligram is free to download, with in-app purchases available.
Is Caliper free?
Caliper is free to download, with no in-app purchases.
Which has better reviews, Milligram or Caliper?
Caliper is rated higher. Milligram averages 4.7 out of 5 from 419 ratings, while Caliper averages 5.0 from 1 ratings.
Do Milligram or Caliper have ads?
Neither Milligram nor Caliper shows ads.
Which is updated more often, Milligram or Caliper?
Milligram ships an update every 5 days, and Caliper every 10 days. Most recently, Milligram was updated on October 24, 2026 and Caliper on October 23, 2026.

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