DigiKey vs TOPSIM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DigiKey
Access a vast inventory of electronic components on the go. Find, order, and track parts with features like visual search, barcode scanning, and offline datasheet access. Registered users get enhanced order management and shipping notifications.
- Visual Search for parts by photo
- Browse and filter product inventory
- View detailed product specs, datasheets, photos, and videos
- Real-time pricing and stock availability
- Barcode scanner for quick part finding
- Create shopping carts and place orders
- Offline datasheet viewing
- Electronic industry calculators
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The Digi-Key app gives you instant access to one of the world’s largest inventories of in-stock electronic components. Find and order the parts and technologies you need for your design whether you’re at work, home, or on the go! Features: • Browse Digi-Key’s full product inventory or filter by product specifications • View detailed product specifications, datasheets, photos, and videos • See real-time pricing and stock availability • Use the barcode scanner to find parts quickly • Create lists of parts using multiple shopping carts, then place your order(s) • Use your recent history to resume searches or return to product pages • Access electronic industry calculators such as resistor color code, pressure, battery life, ohms, and more • Save datasheets on your device with the ability to view offline Do you have a My Digi-Key account? • As a registered user, you’ll benefit from additional features: • NEW! Shipping notification and tracking • View your profile, order status, and order history • Create packing lists to validate your shipment • Save your favorite products • Manage your saved addresses Please tell us about your experience! Rate our app, use the Contact Us feature, or reach us at mobile@digikey.com.
TOPSIM
This app provides seamless global data connectivity for travelers and connected devices. It offers instant data upon arrival in new countries without roaming charges and flexible, no-contract plans for home use. Manage multiple devices and connections from a single dashboard across over 190 countries.
- Instant global data activation
- No roaming charges
- Flexible no-contract plans
- Connect any device (IoT, MiFi)
- Real-time data monitoring
- 24/7 human support
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Connectivity should be effortless. TOPSIM makes it that way — for your phone, and for everything else you need online. For travelers and everyday data Land in a new country and you’re connected before you reach baggage claim. No roaming charges, no airport kiosks, no swapping tiny plastic cards. Just instant data the moment you arrive. And when you’re home, TOPSIM is the no-contract plan that doesn’t play games. No lock-in. No surprise overages. No bill that creeps up every quarter. Pay for what you need, change it anytime, cancel whenever. For your connected devices Trackers, routers, cameras, sensors, MiFi hotspots — if it needs a signal, TOPSIM keeps it online. Deploy one device or a thousand, manage every connection from a single dashboard, and keep them all running across 190+ countries. One account. One source of truth. Global coverage. Everything you need, in one app: • Activate an eSIM in minutes — scan, tap, done. 190+ countries. • Connect any device — phones, IoT, MiFi, and more, all in one place. • Watch data in real time — every line, every device, always clear. • Top up instantly — add data the second you need it, anywhere. • Switch plans on your terms — travel, home, or fleet. You decide. • Reach real support, 24/7 — actual humans, any time zone. Whether you’re boarding a flight, cutting ties with an overpriced carrier, or keeping a fleet of devices online across continents, TOPSIM connects it all — on your terms. Download TOPSIM. Connect everything, anywhere.
Screenshots
Verdict
The clearest difference is rating: DigiKey at 4.7 against TOPSIM's 3.0. DigiKey also leads on ratings volume (3.5K vs 2). TOPSIM's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). 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.
DigiKey holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: DigiKey has 3.5K ratings behind it against 2, so its average is the more settled of the two.
DigiKey ships an update every 2 months, TOPSIM monthly. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.
| Parameter | DigiKey | TOPSIM |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (3.5K ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 50.9% of reviews | — |
| Number of ratings | 3.5K — better | 2 |
| Update frequency | Every 2 months | Monthly — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.7 — better | 15.0 |
| Further details — not scored | ||
| Size | 32 MB | 94 MB |
| Age rating | 4+ | 4+ |
| Developer | Digi-Key Corporation | 颂文 莫 |
Customer experience
DigiKey
TOPSIM
Bugs and requests
DigiKey
Reported bugs
4 issues- Frequent crashes and app freezes
- Inconsistent login and account behavior
- Checkout process errors and failures
- Unreliable search and filtering
Requested features
4 requests- Add BOM management tools
- Improve sorting and filtering options
- Integrate with more payment methods
- Enhance order tracking and history
TOPSIM
Not enough reviews yet to summarise bugs or requests.
In-app purchases
DigiKey
No in-app purchases
TOPSIM
No in-app purchases






