SI Converter vs AppliChat
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SI Converter
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SI Converter is allows you to easily convert unit following the global standard of measurement is the International System of Units (SI). The intent of this app is to provide a convenient way to convert between the various units of measurement within different systems, as well as to provide a basic understanding of the systems currently in use, and how they interact. Supported Units: Area: Square Megameters (Mm²) Square Kilometers (km²) Square Meters (m²) Square Centimeter (cm²) Square Millimeters (mm²) Square Micrometers (µm²) Square Nanometers (nm²) Square Inches (in²) Square Feet (ft²) Square Yards (yd²) Square Miles (mi²) Acres (acres) Ares (a) Hectares (ha) Lengh: Megameters (Mm) Kilometers (kM) Hectometers (hm) Decameters (dam) Meters (m) Decimeters (dm) Centimeters (cm) Millimeters (mm) Micrometers (µm) Nanometers (nm) Picometers (pm) Inches (in) Feet (ft) Yards (yd) Miles (mi) Scandinavian Miles (smi) Light Years (ly) Nautical Miles (NM) Fathoms (ftm) Furlongs (fur) Astronomical Units (ua) Parsecs (pc) Pressure: Newtons Per Meter Squared (Equivalent to Pascals) (N/m²) Gigapascals (GPa) Megapascals (MPa) Kilopascals (kPa) Hectopascals (hPa) Inches of Mercury (inHg) Bars (bar) Millibars (mbar) Millimeters of Mercury (mmHg) Pounds Per Square Inch (psi) Temperature: Kelvin (K) Degree Celsius (°C) Degree Fahrenheit (°F) volume: Megaliters (ML) Kiloliters (kL) Liters (L) Deciliters (dL) Centiliters (cL) Milliliters (mL) Cubic Kilometers (km³) Cubic Meters (m³) Cubic Decimeters (dm³) Cubic Millimeters (mm³) Cubic Inches (in³) Cubic Feet (ft³) Cubic Yards (yd³) Cubic Miles (mi³) Acre Foeet (af) Bushels (bsh) Teaspoons (tsp) Tablespoons (tbsp) Fluid Ounces (fl oz) Cups (cup) Pints (pt) Quarts (qt) Gallons (gal) Imperial Teaspoons (tsp) Imperial Tablespoons (tbsp) Imperial Fluid Ounces (fl oz) Imperial Pints (pt) Imperial Quarts (qt) Imperial Gallons (gal) Metric Cups (metric cup) Mass: Kilograms (kg) Grams (g) Decigrams (dg) Centigrams (cg) Milligrams (mg) Micrograms (µg) Nanograms (ng) Picograms (pg) Ounces (oz) Pounds (lb) Stones (st) Metric Tons (t) Short Tons (ton) Carats (ct) Ounces Troy (oz t) Slugs (slug) angle: Degrees (°) Arc Minutes Arc Seconds Radians (rad) Gradians (grad) Revolutions (rev) Speed: Meters Per Second (m/s) Kilometers Per Hour (km/h) Miles Per Hour (mph) Knots (kn) time: Hours (hr) Minutes (min) Seconds (sec) Milliseconds (ms) Microseconds (μs) Nanoseconds (ns) Picoseconds (ps)
AppliChat
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AppliChat – Smart and Fluid Messaging for iPhone, iPad, and Mac AppliChat is a modern messaging app specially designed for the Apple ecosystem. With a fast interface, single sign-on system, and advanced features like voice messages, AI-powered chat, and real-time location, AppliChat transforms the way you communicate across all your Apple devices. Main Features: • Single Sign-On Easily access the app with a unique session ID and password. Use the same session to log in across multiple devices (iPhone, iPad, or Mac) without relying on external services. • Simple Account Management Recover your password via email, edit your profile, or delete your account directly within the app. • Fast and Visual Messaging Send and receive messages with status indicators (sent, received, read, answered) and customize your chat by changing colors, message alignment, and shadows. • Walkie-Talkie Voice Messages Send voice messages by holding down a button. Listen to received messages by swiping right or tapping the alert button. • AI Chat Create a personalized assistant with AI. Define its personality and response style to have a virtual companion tailored to your needs. • Advanced Contact Management Add users by session number or by scanning with the camera. Accept or reject requests easily with intuitive gestures. • Location in Chat with mapiChat View the location associated with the last message sent on the map directly within the chat. AppliChat is designed to provide a seamless and hassle-free experience across all your Apple devices. Perfect for those seeking fast, functional, and customizable communication.
Screenshots
Verdict
The clearest difference is ads: AppliChat at none against SI Converter's shown. On price, update cadence, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
SI Converter ships an update every 2 months, AppliChat monthly. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.
| Parameter | SI Converter | AppliChat |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Monthly — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.2 — better | 18.0 |
| Further details — not scored | ||
| Size | 4 MB | 37 MB |
| Age rating | 4+ | 12+ |
| Developer | Ramon A. Marchante Castellanos | Pavel Lezama |
In-app purchases
SI Converter
No in-app purchases
AppliChat
No in-app purchases
Questions
Is SI Converter free?
Is AppliChat free?
Do SI Converter or AppliChat have ads?
Which is updated more often, SI Converter or AppliChat?
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