IMBox vs Mi Portafirmas
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IMBox
A secure and private instant messaging platform for businesses. It facilitates easy communication and file sharing among employees, clients, and providers without requiring phone numbers. Offers robust security features for data control and network management.
- Private and secure instant messaging
- File sharing for any file type
- Unlimited group chats and broadcast lists
- Cross-company communication
- Integrated user directory
- Message status notifications
- Remote data swipe
Read full descriptionHide full description
IMBox offers companies and their employees a private, secure, powerful and easy to use Instant Messaging solution. IMBox is designed to fit business needs and as a result, the security of your information is one of our main concerns: § Remote swipe of users and their information § Control over shared files § On premise server installation available if required § Web panel to control network activity and access IMBox is also designed to fit employees needs: § User friendly to make employee adoption easy § File sharing. Share any type of file instantly § Group chats and broadcasts lists with no limit on members § Private cloud for users. Also, private chats and groups have their own cloud so users can easily access recently shared files § Group chats and broadcasts lists can be set to “Cross-company” meaning that clients and providers can be invited to join the conversation § No need to share phone numbers. Users in the same private network will have access to an integrated directory and will be able to search for anyone in the network by name. § Message sent, received and read notifications § Passport: Every user has a personal Passport. Passports can be shared with clients and providers to establish secure conversations through IMBox
Mi Portafirmas
Read full descriptionHide full description
Port@firmas es el aplicativo móvil del Ministerio de Asuntos Económicos y Transformación Digital para acceder a sus servicios de portafirmas. Deberá ser usuario de Port@firmas para hacer uso de esta aplicación. Mi Portafirmas is a mobile app from the Ministry for Digital Transformation and Public Administration that allows public employees to access Portafirmas services, where you can sign and approve signature requests using your mobile phone. To use the app, you must have previously registered in one of the Portafirmas servers. You'll find the following main features and functionalities in the My Portafirmas app: Sign, approve or reject requests. From the application's home page, you can access the Pending Requests tray and view the main contents of the requests: description of the request, who made the request, date the request was entered, expiration date, type of action required by the request, and the request's signature priority. From this screen, you can sign or approve/reject multiple requests at once. Tapping on the petition will take you to its details, including the documents to be signed. You can also sign or reject the petition from the petition details. Consult signed or rejected petitions. From the home screen you will be able to consult the signed petitions tray and the rejected petitions tray. From the signed petitions tray, you can also access the signed documents and the signature report generated when you sign the petition. Determine order and filter requests. From the home screen, you can access the filter option to sort and filter requests by specific criteria: Order by: • Most recent requests • Older requests • Requests close to expiring Filter by: • Request type (all, validated, not validated, signature, approval) • Keyword or user name (using a free text field) • Time interval (all, last 24 hours, last week, last month) • Apply Once you apply the filters, they will appear in the request tray based on the filters selected. Add validators. From your profile section you can add validators by entering the name or tax ID of the person you want to validate the requests. The validators will receive the requests sent to you and will be able to validate the request. In this way, you can sign or approve the petition knowing that it has already passed a first filter of approval by your validator. Log in as a validator and validate requests. If you are another user's validator, you can log in with a validator profile and validate the other user's requests. In addition to viewing the general details of the request (sender, date the request was entered, expiry date, type of action required by the request, signing priority of the request), you can also view the details of these requests (remarks, documents to be signed, attachments, history of recipients of the request and other details). Authorise people to sign your petitions. From your profile section, you can register people to sign your petitions in your absence. Authorised persons will receive your petitions and will be able to sign or reject a petition on your behalf.
Screenshots
Verdict
IMBox and Mi Portafirmas are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
IMBox ships an update every 2 weeks, Mi Portafirmas monthly. The most recent releases landed on October 21, 2026 and October 26, 2026 respectively.
| Parameter | IMBox | Mi Portafirmas |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (12 ratings) — better | — |
| Positive reviews | 25.7% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Every 2 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 168 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | SPOTBROS TECHNOLOGIES S.L. | Ministerio de Asuntos Economicos y Transformacion Digital |
In-app purchases
IMBox
No in-app purchases
Mi Portafirmas
No in-app purchases






